My Jack Russell Slim has been using it for a couple of months now and he loves it
GIVE YOUR HENS THE NUTRITION THEY ARE MISSING
Proudly Australian Grown and Made in Jervis Bay
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Sustainably harvested in Jervis Bay
More Eggs. Stronger Shells. Healthier Hens.
True Grit — 100% Australian Mussel Shell Grit for Backyard Chickens & Poultry
Naturally Rich in Calcium
Independently Trialled at Bega Eggs
Grown in Jervis Bay
Zero-Waste Production
No Additives or Synthetics
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"I've seen a massive difference in my flock. The eggshells are rock-solid now and the girls have never looked healthier!"
Product description
Stronger shells, from the sea floor up.
Chickens can't make calcium — they take it from their feed, and if there isn't enough, they take it from their own bones. That's where thin shells, breakages and tired hens start.
True Grit is granulated blue mussel shell from our Jervis Bay farm — a naturally rich source of calcium. Because it's whole shell rather than a fine synthetic powder, it breaks down slowly, so your hens draw on it steadily through the day instead of all at once.
Independent trials at Bega Eggs found improvement in eggshell thickness and durability when mussel shell grit was added to the feed.
One ingredient. Nothing added, nothing synthetic.
Grown, not mined
Every shell in this bag came from one of our own mussels. Nothing goes to landfill — we clean, granulate and bag them, so the whole harvest gets used. Same water, same farm, same family, sea to bowl.
Why your hens will thrive on it
- Stronger, more resilient eggshells — fewer breakages and deformities
- Supports bone health and skeletal development in poultry
- Slow-release calcium for consistent, ongoing absorption
- Naturally rich in calcium — a whole-shell source, not a synthetic powder
- Granulated 2–4mm — the grade hens take to most readily
Why True Grit
- 100% natural — no artificial additives or chemicals
- Repurposed from our Jervis Bay mussel production
- Zero-waste — every shell repurposed, nothing sent to landfill
- Independently trialled at Bega Eggs
High Protein (52.8 g per 100 g): Supports strength, recovery, and daily energy.
Omega-3 (4.83 g per 100 g): Reduces inflammation, supports mobility, and promotes healthy skin & coat.
Phospholipids (67–68%): Help pets absorb omega-3s more effectively.
EPA & DHA (3.84 g per 100 g combined): Backed by science for joint health, brain function, and resilience.
Offer it free-choice — don’t mix it into feed.
Put True Grit in a separate dish, hopper or shallow container next to their feed and water. Hens will generally take the calcium they need when it’s freely available. Mixing it through feed removes that choice and can lead to over-consumption.
Keep it dry.
Position the dish undercover or use a covered hopper. Top up as it empties and replace if it gets wet or soiled.
Available at all times.
Calcium demand peaks overnight, when shells are formed. Constant access matters more than quantity.
One size, sized right.
Granulated to 2–4mm — the grade laying hens take to most readily. Offer it as-is, straight into the dish.
Bonus use: soil conditioner.
The same shell works as a slow-release calcium amendment for garden beds and compost. Scatter over the surface or work lightly into the top layer — it’ll break down gradually over the season.
At Marine Vitality, every batch of our Jervis Bay Mussel Powder is supported by independent analysis and industry recognised quality standards. Our approach is simple. If we claim it, we can verify it.
Independent Laboratory Analysis
Our mussels undergo detailed laboratory testing to confirm their nutrient profile, including protein levels, omega 3 composition and phospholipid content. This testing verifies the high levels of EPA, DHA and phospholipid bound omega 3s that set Jervis Bay Blue Mussels apart from standard mussel powders, including Green Lipped Mussel.
Phospholipid Bound Omega 3s
One of the most important findings in our research is the naturally high percentage of phospholipid bound omega 3s. Independent analysis shows that Jervis Bay Blue Mussels contain 68 percent phospholipid bound omega 3s, which supports superior absorption and more effective delivery of EPA and DHA.
Nutrient Density and Protein Quality
Testing also confirms the rich protein content and broad nutrient profile of our mussels. The protein is naturally complete and highly digestible, making it suitable for both dogs and cats as a daily nutritional support.
Comparative Analysis
Our mussels have been directly compared with standard mussel powders, including New Zealand Green Lipped Mussel. The findings show naturally higher levels of bioavailable omega 3s and a stronger overall nutrient density in Jervis Bay Blue Mussels. These differences reflect both species characteristics and the unique marine environment of Jervis Bay.
Sustainable, Local and Traceable
All mussels are produced in the pristine waters of Jervis Bay and processed under strict quality controls. Our production is zero waste, with both mussel meat and shell utilised. We work with accredited facilities that meet Australian food safety and aquaculture standards to ensure consistency and purity in every batch.
Ongoing Quality Assurance
We continue to work with researchers and industry partners to refine our data and maintain a high standard of product integrity. As more research becomes available, we will update our testing summaries so that customers always have clear and current information about what is in their pet’s bowl.
This commitment to transparency and ongoing testing is at the heart of Marine Vitality. We want you to feel confident that every serve of Jervis Bay Mussel Powder is grounded in real science and produced with care.
- Processed in a NSW Food Authority approved human-grade facility.
- Best Aquaculture Practices (BAP) certified
- Responsible, sustainable farming.
- Zero-waste production – every part of the mussel and oyster is put to use.
- Award-winning quality – trusted in premium food, now crafted for pets.
Have a question?
30 Day Risk-Free Trial
Free Shipping On Orders Over $80
Sustainably harvested in Jervis Bay
True Grit Shell Grit — 3kg
Key Benefits of True Grit Mussel Shell Grit
Bega Eggs Independent Trial
Found improvements in eggshell thickness and durability when mussel shell grit was added to the feed
Naturally rich in calcium
Strengthens eggshells, reduces breakage, and supports healthy bone development in poultry.
Granulated 2–4mm
The grade laying hens take to most readily. Slow-release, whole shell — not a fine synthetic powder.
Eco-Friendly & Zero-Waste
100% natural, repurposed from mussels grown on our own Jervis Bay farm. Nothing sent to landfill.
Additional applications: natural soil conditioner
Mussel Shell Grit is not only valuable for animal feed but also serves as an effective soil conditioner. When applied to agricultural land, it helps:
🗸 Improve soil pH by reducing acidity
🗸 Enhance soil structure & water retention
🗸 Provide slow-release calcium for plant growth
A natural, zero-waste use — made from Jervis Bay mussel shells, nothing is wasted.
How To Use
Free-choice calcium — offered alongside their feed, never mixed into it.
Step 1
Offer it free-choice — don’t mix it into feed
Put True Grit in a separate dish, hopper or shallow container next to their feed and water
Step 2
Keep it dry
Position the dish undercover or use a covered hopper, and replace it if it gets wet or soiled
Step 3
Available at all times
Calcium demand peaks overnight, when shells are formed — constant access matters more than quantity
One size, sized right.
( Granulated 2–4mm )
The grade laying hens take to most readily. Offer it as-is, straight into the dish.
Granulated 2–4mm
A quick note
Hens will generally take the calcium they need when it’s freely available. Mixing it through feed removes that choice and can lead to over-consumption.
For Best Results
Keep the dish topped up as it empties and store the bag sealed in a cool, dry place. Constant access matters more than quantity — calcium demand peaks overnight, when shells are formed.
Meet The Chief
In this interview, Scott, CEO of Marine Vitality, shares the story behind the brand and why it exists.
Farming mussels in the pristine waters of Jervis Bay, Scott has spent his career in aquaculture, drawn to shellfish farming for its sustainability and ability to work with nature rather than against it.
Real Results. Real Joy.
Marine Vitality isn’t just another pet supplement — it’s functional ocean nutrition made simple.
Each ingredient is pure, powerful, and purpose-driven to enhance your pet’s daily health and vitality.
One ingredient at a time. No fillers. No fluff. Just results.
Sprinkle it daily — nature takes care of the rest.
Mussel Powder Magic
Protein + Omega-3s for strength and mobility.
Sustainably sourced from pristine Jervis Bay waters, our Australian Mussel Powder delivers essential nutrients that support joint health, flexibility, and overall vitality.
Meet our resident pet nutritionist
Ruth Hatten
Meet our resident pet nutritionist
Ruth Hatten
As an animal naturopath and pet nutritionist, I only stand behind products that align with my values - clean, nourishing, and supportive of real, lasting health.
Marine Vitality’s mussel powder is rich in naturally occurring nutrients that support joint health, mobility, immune resilience, skin repair and overall vitality in dogs and cats.
With just a small amount, you can meaningfully boost your pet’s bowl. I’m proud to lend my name to these natural, science-backed, Australian-sourced products that bring the best of marine nutrition to everyday feeding.
Customer Reviews
Overall rating: 4.5 / 5 from 549 reviews.
Keeva the Koolie is loving her Vitality! She can play & run now keeping up with the younger dogs without coming up lame. She is not shedding hair now & her coat is beautiful & shiny. Thank you to this wonderful Australian product 🙏
This is the 2nd time we have ordered this product. Our 4 legged fur baby Bear absolutely loves the taste. No trouble with eating it. Just mix with his night food. We thought at first it wasn't doing anything for him, but once 1st order finished and had to wait a few days for 2nd order, as we weren't going to re order, he started to go backwards with his walking. So it was definitely doing something for his hips and legs. Will keep him on it, as it is helping his traction on our floor boards at home also. Just loves life at the beach, when ever we get there on our holidays, as we love to travel with him. Bear is an English Staffy and over 13 years old now. Just wanted to give him a better quality of life in his old age. Highly recommend this product.
Marine Vitality are an essential Australian based pet supplement company that have honest integrity. They care for preventive treatment to help pets in later stages of health and strength as they get older. Have found this supplement very good. Highly recommend 👌
Ivy wasn’t put off by the fish smell at all. Still devours everything put in front of her.
mum,dad and a pup
Having a Labrador x cocker spaniel, he's a huge food lover, he absolutely loves the green mussel topper and licks the bowl multiple times after each meal. His coat has always been shiny but we've noticed it is now so soft after just a few days. Love this.
Bowl is empty. Tex eats all his dinner. I will buy the kilo bag next time.
Fantastic, our ferrets love it, farm cats like it & guard dogs enjoy it. So easy to spread onto their food !
It's wonderful, the colour lets me see if it's being eaten.
Definitely noticed a difference over 2 weeks. Will continue using it great product, has reduced my dogs scratching. Coat is looking great too
Arthritis doesn’t slow down the bull terrier since being on Marine Vitality. She now has a satiny healthy coat and fronts each morning with no more pain and loads of energy for a day of activity.
I’ve bought this to help my frenchie , in aid of combatting IVDD , she is 1.6 yrs old . So still just a baby to me 💕. I want to learn everything that I can do to combat this disease. Any advise would be muchly appreciated 🩷.. can anyone advise me if I can get green lipped muscle delivered to australia( I believe will my research This is my best chance plz ?
Bonnie and Alice are on their second can. Their hair is nice and soft. The big thing l have noticed is their energy. They are like Eveready batteries. Im still waiting for, hopefully their skin improves. They have allergies, Bonnie not as bad. Alice has yeast problems. I do think environmental, especially with Bonnie. I took out a subscription on your product, so lm persevering.
Really too early to judge as my two beagles have only just finished their first 150 gm container but one in particular ,Sasha,seems much more energetic. Will see how they progress but so far so good.
My 10 year-old stuffy had stiffness in his legs but now after having marine vitality, he seems to be able to walk and run without the stiffness he was suffering from before.
Our 12 years young Groodle Kenny is more active after just 2 weeks even able to jump in the car.
Started my pup on Marine Vitality Mussel Powder just over a month ago go. Happy to report no issues with allergies and his skin & coat are so smooth, shiny and healthy. His gut is also good. No stinky gas or runny poop. When we started Marine Vitality Mussel Powder my 9 mth old pup had some acne on his head and after just a few days we started noticing his skin starting to improve. Since he’s been on it, no new pimples came up and the existing ones are all gone now. Thanks for a wonderful product!
I am happy with the product, although me dog has only been taking it for about two weeks so I haven't seen much of a change yet.
Basil loves it. He cleans his plate every night, and his coat is very shiny. We hope that it is protecting his joints and bones.
Bengi and Monty love there green lipped mussel powder
My online order was processed and delivered promptly! Thank you! I was looking for something to help reduce allergy symptoms and assist the body with aging for one of our dogs. Our other dog is young and has no issues but I'm adding it to his diet for his general wellbeing. It's still early days, as it's only been a week since I started adding Marine Vitality Mussel powder to their dog food, but I'm very happy so far.
I have tried many things to help. Dealing with flare ups like the photo shows as well as redness over body and ears. Cytopoint etc worked first time but the next one had no effect. I have been using Marine Vitality for 7 days, there have been no flare ups in this time, the second picture is after 4 days. Still the occasional redness and paws are still red. Will continue to use as I believe it has helped so far.
All my girl's and roosters love their grit! Very happy clucking!
Chanel loves it mixed in with her dinner.
Our 7 year old Havanese has heaps more energy since I’ve incorporated Marine Vitality into his diet. His limping has greatly improved and I’m hoping the paw licking will improve in time too! It’s a natural product which he tolerates well. Highly recommend.
My French Bulldog Murphy is 9 months old. She is really active, and her favourite thing to do is jump up and down on the sofas. I am so no worried about IVDD thot I introduced this about 2 weeks ago. Upon reading about the green lipped mussel, I came across the Jervis Bay mussels and its qualities. Mid far I have noticed that Murphys coat is soft and shiny. As for her energy levels, they are great and she is flying. Fingers crossed there is no IVVD. I will be ordering this product ct regularly
The girls find it tasty 😋
Still early days. Bonnie, my schnauzer, has stopped itching. Alice my little Cavadoodle is still itching. Im hoping she calms down soon. They suffer from yeast infections. I will keep giving Vitality in the future cause l believe in your product. So far l would definitely recommend to others.
My beautiful giant dog loves MV sprinkled over her dinner surprisingly the canister lasted longer than expected. A lingering hip problem seems to have improved
My girls love it , Thankyou
As someone who is passionate about presenting dogs in their best condition, I'm genuinely impressed with the results. Within just a few weeks, we've seen a noticeable improvement in our dogs' skin and coats. The coats have better texture, shine, and overall condition. I've already recommended the product to several people and have shown them the difference it's made to our own dogs. It's a product I'm very happy to stand behind and continue using.
Very happy with the product
Wanted to buy Australian product and glad I found True Grit. Easy ordering online and fast delivery. I have two new chickens and wanted to support them as they started laying eggs. I share a small handful with them each day and its enjoyed over the day. Thank you 😊
We've been using Marine Vitality for approx. 4 weeks now and we are absolutely amazed with the results. Our boy had a serious bone disease when he was a pup and had major surgery. His arthritis has been holding him back for nearly 10 years. After 2 weeks of using this product he is a lot more energetic and running around more than he ever has and his coat and skin look fabulous. After 4 weeks all paw licking and scratching has stopped! We have tried so many products to address these issues and finally we have hit the jackpot. Thank you for your tireless dedication and commitment to producing a top quality product. Snoopy thanks you too as he is now living his best life.
Marine Vitality Mussel Powder For Dogs - 150g
Store owner replied: Hi, thank you so much for sharing Snoopy's story. ❤️ We're absolutely thrilled to hear he's feeling more energetic and enjoying life again. Knowing that you've noticed improvements in his mobility, skin, coat, and that his paw licking and scratching have settled means so much to our team. Thank you for your kind words and for trusting Marine Vitality. Give Snoopy a big pat from all of us! 🐾
This is Dani, our oldest ridgeback. Since adding Marine Vitality daily to her meals she has become a puppy again. Her energy levels have increased and she is moving freely. Have also noticed that our younger girl is scratching much less since commencing daily MV. Thank you for a product that is 100% Australian and 100% free of additives.
Marine Vitality Mussel Powder. 150g.
Store owner replied: Thank you so much for sharing Dani's story with us. Hearing that she's moving more freely and acting like a puppy again is exactly why we do what we do. It's also wonderful to hear your younger girl is scratching less since starting Marine Vitality. Thank you for trusting us with both of your beautiful ridgebacks. We truly appreciate your kind words about our 100% Australian, single ingredient product. It means a lot to us. Thank you for being part of the Marine Vitality family.
Order arrived super fast. Nice eco-friendly packaging. Product is simple to use straight out of the pack. I just sprinkle it over my pup’s kibble and he gobbles it up licking the bowl clean. Since I started feeding my pup his skin has improved so much and his coat is super shiny and soft. Reasonably priced for an all natural single ingredient product, made in Australia.
Our almost 9 year old Kelpie cross has had arthritis since he was 3. Plus has had cruciate ligament surgery on both rear legs. He is improving with mobility since using this product and enjoying life with his 2 year old sister.
So far our 4 legged fur baby loves it. No problems with eating mixed with his night feed sachet. Noticed difference straight away and only been 4 days. He isn't skidding on floor boards to try and get a grip, while just walking. He is an English Staffi and 13 and a half years old. Will be ordering again and set up a direct automatic payment for a delivery.
Frequently Asked Questions
Marine Vitality is 100% pure Australian blue mussel powder — nothing else. No fillers, no additives, no synthetics. The mussels are sustainably farmed in Jervis Bay, NSW, and gently processed to preserve their natural nutritional profile. Each serve delivers naturally occurring omega-3 fatty acids, glucosamine, chondroitin, high-quality marine protein and phospholipids.
Yes — it's the exact same 150g mussel powder. The active ingredient and nutritional profile are identical. We've created a separate horse page because the dosing, introduction schedule and feeding tips are different for equines, but the product itself is the same one trusted by dog and cat owners across Australia.
Both are valued sources of marine nutrition, but Australian blue mussels have some distinct advantages. Independent analysis by the University of Newcastle found our Jervis Bay mussel powder delivers a higher total omega-3 content (4.83g per 100g vs 3.9–4.5g for NZ green-lipped mussels) and a higher phospholipid fraction (68% vs ~59%). Phospholipid-bound omega-3s are more readily absorbed by the body than free fatty acids, which means your horse gets more out of every serve. Our mussels are also farmed and processed entirely in Australia — no import lag and full traceability from sea to stable.
Most horse owners start to notice changes in comfort and movement within 3 to 6 weeks of reaching the full daily dose. Results vary depending on your horse's age, weight, existing joint condition and overall diet. The loading phase (double dose for the first two weeks) is designed to build up levels faster. Consistency is key — this is a whole-food supplement that works best as part of a daily routine.
Product & Nutrition
Jervis Bay Mussel Powder is a single-ingredient, whole-food supplement made from 100% Australian blue mussel meat. It provides naturally occurring omega-3 fatty acids, phospholipids, protein and marine amino acids to support overall wellbeing as part of a balanced diet.
We use Australian blue mussels sustainably grown in Jervis Bay, NSW. Our mussels are grown, harvested and processed locally, giving us full traceability from sea to bowl.
Australian blue mussels are a highly nutritious marine food, naturally rich in omega-3s, phospholipids, protein and marine amino acids.
Independent research has shown Australian blue mussels to be comparable, and in some areas nutritionally superior to green-lipped mussels, particularly in phospholipid content, which supports bioavailability. Local sourcing also allows greater control over freshness and quality.
Jervis Bay Mussel Powder is a whole-food powder, not an extract. The mussels are gently processed and milled without isolating or concentrating individual compounds. Nutrients remain in their natural food matrix, supporting gentle digestion and long-term use.
Bioavailability refers to how easily nutrients are absorbed and used by the body. In whole marine foods like mussels, omega-3s are naturally bound to phospholipids, which can support absorption compared to isolated oils. This makes whole-food marine nutrition a food-first option for everyday use.
No. Jervis Bay Mussel Powder is a supplementary whole food designed to be added to your pet’s existing diet. It does not replace complete pet food.
Yes. Jervis Bay Mussel Powder is designed to complement a wide range of feeding styles, including raw, home-cooked, fresh and premium commercial diets.
No. The product contains one ingredient only: whole Australian blue mussel meat.
Our mussels are grown in the clean, nutrient-rich waters of Jervis Bay and produced in accordance with Australian food safety standards. Independent testing has shown levels to be within safe limits.
As a whole-food product, nutrient levels can naturally vary between harvests and seasons. Rather than isolating or standardising individual compounds, we focus on consistent quality, sourcing and processing so nutrients remain in their natural food form.
Our zero-waste aquaculture model means every part of the mussel harvest is valued and utilised. This supports sustainability while allowing us to maintain freshness, reduce unnecessary processing and keep full control over quality.
Store in a cool, dry place with the lid tightly sealed to maintain freshness