Wild-Caught Marine Collagen Peptides – Type I, II, III & IV

Two people running on a beach with text about full-spectrum collagen.

Collagen peptides packaging with text on a blue background

Comparison chart of Marine Collagen and Bovine Collagen with a hand holding Nature Merge Collagen Peptides packaging.

Person holding a container of 'Collagen Peptides' by Nature Merge with certification logos on a blurred background.

Woman drinking a glass of milk with purity certification icons and text on a light blue background

Collagen peptides container with a spoon and text on a blue background

Nature Merge infographic explaining collagen types: Type I and II support joints, Type I, III, IV improve skin elasticity, Type III aids digestion, Type I and III help with hair loss, Type I strengthens nails, and Type II, IV support muscle recovery. Marine Collagen includes all four types for complete body benefits.

WHERE DOES NATURE MERGE WILD-CAUGHT COLLAGEN COME FROM?

We source our collagen exclusively from wild-caught, deep-sea white fish from the cold waters of the North Atlantic. Unlike farm-raised fish or bovine sources, our collagen is free from antibiotics, growth hormones, and land-based contaminants.

WHAT ARE THE MAIN BENEFITS OF MARINE COLLAGEN PEPTIDES?

Marine collagen is primarily prized for its superior bioavailability; because it has smaller particles (peptides), it is absorbed up to 1.5 times faster than bovine alternatives. Regular intake is scientifically linked to improved skin elasticity, significant reduction in fine lines, and increased dermal hydration within 4 to 8 weeks.

IS YOUR COLLAGEN TESTED FOR HEAVY METALS LIKE MERCURY?

Yes. A major pain point with marine supplements is the risk of toxins found in low-quality environments. Nature Merge is sourced from wild-caught North Atlantic fish, which are naturally lower in contaminants than farm-raised fish. We provide a public Certificate of Analysis (COA) for every batch to guarantee our product is third-party lab-tested for heavy metals and purity.

WHAT IS THE DIFFERENCE BETWEEN TYPE I, II, III, AND IV COLLAGEN?

While 90% of the body’s collagen is Type I (skin, bones, hair), a "Full-Spectrum" approach is essential for total health:

Type I & III: Work together to support skin firmness, muscle repair, and gut health.

Type II: Essential for joint support, making up the cartilage that cushions your knees and elbows.

Type IV: A rare but critical component for the basement membranes in your skin layers.

HOW MUCH COLLAGEN SHOULD I TAKE DAILY FOR RESULTS?

Clinical studies suggest that a daily dose between 5g and 10g is optimal for noticeable changes. While some effects on skin hydration can be seen in as little as 4 weeks, joint and bone health benefits typically require 3 to 5 months of consistent daily use.

Wild-Caught Marine Collagen Peptides – Type I, II, III & IV

Name: Wild-Caught Marine Collagen Peptides – Type I, II, III & IV
Brand: Nature Merge
SKU: COL-FILLED
Price: 45.0 USD
Availability: InStock
Rating: 4.93 (72 reviews)

Unflavored

Wild-Caught | Full-Spectrum | Lab-Tested Clean

Premium marine collagen peptides sourced from wild-caught North Atlantic fish. Hydrolyzed for maximum absorption. Full-spectrum Types I, II, III & IV to support skin, joints, bones, and muscles.

Title

Neutral taste, dissolves easily—add it to coffee, tea, smoothies, or water.

30

Servings

1 mo

60

Servings

2 mo

90

Servings

3 mo

Free Shipping on orders over $60

WHERE DOES NATURE MERGE WILD-CAUGHT COLLAGEN COME FROM?

We source our collagen exclusively from wild-caught, deep-sea white fish from the cold waters of the North Atlantic. Unlike farm-raised fish or bovine sources, our collagen is free from antibiotics, growth hormones, and land-based contaminants.

WHAT ARE THE MAIN BENEFITS OF MARINE COLLAGEN PEPTIDES?

Marine collagen is primarily prized for its superior bioavailability; because it has smaller particles (peptides), it is absorbed up to 1.5 times faster than bovine alternatives. Regular intake is scientifically linked to improved skin elasticity, significant reduction in fine lines, and increased dermal hydration within 4 to 8 weeks.

IS YOUR COLLAGEN TESTED FOR HEAVY METALS LIKE MERCURY?

Yes. A major pain point with marine supplements is the risk of toxins found in low-quality environments. Nature Merge is sourced from wild-caught North Atlantic fish, which are naturally lower in contaminants than farm-raised fish. We provide a public Certificate of Analysis (COA) for every batch to guarantee our product is third-party lab-tested for heavy metals and purity.

WHAT IS THE DIFFERENCE BETWEEN TYPE I, II, III, AND IV COLLAGEN?

While 90% of the body’s collagen is Type I (skin, bones, hair), a "Full-Spectrum" approach is essential for total health:

Type I & III: Work together to support skin firmness, muscle repair, and gut health.

Type II: Essential for joint support, making up the cartilage that cushions your knees and elbows.

Type IV: A rare but critical component for the basement membranes in your skin layers.

HOW MUCH COLLAGEN SHOULD I TAKE DAILY FOR RESULTS?

Clinical studies suggest that a daily dose between 5g and 10g is optimal for noticeable changes. While some effects on skin hydration can be seen in as little as 4 weeks, joint and bone health benefits typically require 3 to 5 months of consistent daily use.

Dr. D Faller / Regenerative Therapies

"As a specialist in regenerative therapies, I value Nature Merge’s marine collagen for its clean sourcing, purity, and simplicity. It’s rare to find a product with this level of transparency and quality."

Hydrolized

100% Natural

lab tested

Non-gmo

Gluten Free

Wild-caught

The Nature Merge Difference

Sourcing Without Compromise

We source exclusively from wild-caught, cold-water white fish from the pristine North Atlantic waters of Nova Scotia, Canada.

The Full-Spectrum Advantage

(Types I, II, III, & IV)

While competitors stop at Type I and III, our formula provides comprehensive support for skin elasticity (Type I), joint cushioning (Type II), vascular health (Type III), and cellular basement membranes (Type IV).

Superior Bioavailability(<3 kDa)

Our collagen is enzymatically hydrolyzed into tiny peptides with a molecular weight under 3 kDa.

Does it have a fishy taste?

No. Through advanced processing, we have neutralized the sensory profile of the fish. The result is a completely unflavored, neutral-tasting powder that dissolves instantly into coffee or smoothies without clumping or aftertaste.

Free Shipping on orders over $60

Thousands are turning to marine collagen peptides for daily support of skin, joints, and healthy aging — here’s what Nature Merge customers say.

Excellent product. Very easy to mix with your coffee or smoothies. High quality. I’ll definitely be ordering again.

- Jonathan G.

Really good! The taste is nice, and it mixes easily in drinks or water. I take it every day, and the results are seriously impressive.

- Tom H.

I've been using Nature Merge Collagen for a month, and I can already see a real difference.

- Emma W.

I just finished my first bag and will be reordering. I put it in my smoothie and love that it has absolutely no flavor.

- Melanie R.

Read All Reviews

what makes marine collagen better?

Marine collagen is a naturally occurring protein sourced from wild-caught fish. Nature Merge Marine Collagen provides Types I, II, III, and IV for complete body support. Hydrolyzed into peptides, it’s easy to absorb and simple to add to your routine.

Feature	Marine Collagen (Nature Merge)	Bovine	Porcine
Source	Wild-caught fish (North Atlantic)	Cow hides	Pig hides
Collagen Types	I, II, III, IV	I & III	Mostly I
Absorption	High (<3 kDa)	Medium	Medium
Illness Risk	Low	Medium	High
Environmental Impact	Low (sustainable, wild-caught)	High	High
Taste	Neutral (no aftertaste)	Mild	Strong

Source	Wild-caught fish (North Atlantic)
Collagen Types	I, II, III, IV
Absorption	High (<3 kDa)
Illness Risk	Low
Environmental Impact	Low (sustainable, wild-caught)
Taste	Neutral (no aftertaste)

Source	Cow hides
Collagen Types	I & III
Absorption	Medium
Illness Risk	Medium
Environmental Impact	High
Taste	Mild

Source	Pig hides
Collagen Types	Mostly I
Absorption	Medium
Illness Risk	High
Environmental Impact	High
Taste	Strong

how to use?

Adding Marine Collagen to your routine is simple.

Mix one scoop (10g) into your beverage of choice—such as smoothies, coffee, or soups. It’s unflavored and dissolves easily, making it a versatile option that fits into any time of day.

Take once daily, with or without meals, as part of your regular wellness routine.

Woman adding Nature Merge Marine Collagen Peptides powder into a blender with berries and milk in a modern kitchen — hydrolyzed, wild-caught collagen from North Atlantic fish to support skin, hair, joints, and muscle recovery.

Got Questions?

frequently asked questions

What is Marine Collagen?

Marine collagen is a naturally occurring protein derived from wild-caught fish. It contains types I, II, III, and IV collagen and is commonly used as part of wellness routines focused on clean, simple ingredients.

How should I use Marine Collagen?

Mix one scoop (10g) into your favorite beverage or recipe.

What Types of Collagen Are in Our Marine Collagen Powder?

Our Marine Collagen Powder contains collagen Types I, II, III, and IV. Sourced from wild-caught fish and hydrolyzed for easy mixing, it’s designed to fit seamlessly into your daily routine. With no additives or fillers, it offers a clean option for those seeking high-quality, unflavored collagen.

Are there any additives?

Our Marine Collagen is free from additives and fillers; it's pure hydrolyzed collagen.

How is it tested for safety?

Every batch is independently tested by Light Labs for eight quality markers, including heavy metals such as mercury, lead, arsenic, and cadmium. The full certificate of analysis is available on our website.

Test dataClose test data

Lab Testing

Nature Merge — Wild-Caught Marine Collagen Types 1,2,3,4

ingredients: Wild-Caught Marine Collagen

directions: Mix 1 scoop (10g) into coffee, smoothies, or any beverage. Use daily for best results.

serving_size: 10g

Batch NMMC26B03

Test date: 2026-05-18 · Batch record

Microbials	Testing method	Result
E. Coli	USPReport 1 · p. 2	Not detected (unit not reported)
Total Plate Count	USPReport 1 · p. 2	< 10 CFU/g CFU/g
Salmonella	USPReport 1 · p. 2	Not detected (unit not reported)
Staphylococcus Aureus	USPReport 1 · p. 2	Not detected (unit not reported)
Total Coliforms	USPReport 1 · p. 2	< 10 CFU/g CFU/g
Total Mold	USPReport 1 · p. 2	< 10 CFU/g CFU/g
Total Yeast	USPReport 1 · p. 2	< 10 CFU/g CFU/g

Heavy Metals	Testing method	Result	Reported requirement
Mercury	LLMTDA1 (ICPMS)Report 1 · p. 1	Not detected ppb	< 0.3 mcg/serving
Arsenic	LLMTDA1 (ICPMS)Report 1 · p. 1	66.96 ppb (0.67 mcg/serving) ppb	< 10 mcg/serving
Lead	LLMTDA1 (ICPMS)Report 1 · p. 1	5.4 ppb (0.05 mcg/serving) ppb	< 0.5 mcg/serving
Cadmium	LLMTDA1 (ICPMS)Report 1 · p. 1	0.2 ppb (0.002 mcg/serving) ppb	< 4.1 mcg/serving

Protein	Testing method	Result
Protein	LLMTDG1 (Dumas - Nitrogen Analyzer)Report 1 · p. 3	110.2% (11 g) % of label claim

Reference

Report 1: Light Labs, an independent ISO 17025 accredited laboratory · 2026-05-18 · 447f0512-3333-4678-b06c-61ae34fda48a · Merchant Uploaded COA · Source report

Nature Merge Marine Collagen Peptides 300g paper tube — unflavored, hydrolyzed collagen powder from wild-caught North Atlantic fish, containing Types I, II, III, and IV for skin, hair, nails, joints, and bone health.

Wild-Caught Marine Collagen Peptides – Type I, II, III & IV

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Wild-Caught Marine Collagen Peptides – Type I, II, III & IV

The Nature Merge Difference

Thousands are turning to marine collagen peptides for daily support of skin, joints, and healthy aging — here’s what Nature Merge customers say.

what makes marine collagen better?

how to use?

Customer Reviews

frequently asked questions

Lab Testing

Batch NMMC26B03

Reference

Wild-Caught Marine Collagen Peptides – Type I, II, III & IV