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A new wave of wellness.

Science-backed supplements for immunity, gut health and glowing skin, powered by certified organic fucoidan.

If this sounds familiar, you're in the right place.

Always catching something

Every office cold, daycare bug or seasonal sniffle finds its way to you, and you're often still run-down after everyone else has bounced back. You wish your body's natural defences were more resilient.

→ Start with SeaQuo® Immune

Skin that won't settle

Adult acne, redness, a complexion that's lost its glow. You've worked through topical products, yet calm, clear skin keeps slipping just out of reach. You feel your skin needs support from deeper than the surface.

→ Start with SeaQuo® Skin + Gut

Running on empty

You get through the day, but you don't feel vital anymore. You can remember feeling that energised spark, and you'd like that version of yourself back.

→ Start with SeaQuo® Immune

Feeling a bit off

You're feeling inflamed, foggy, a little out of step with yourself. You have a general sense that your body needs more foundational support.

→ Start with SeaQuo® Skin + Gut

Bloating & digestive discomfort

Your digestion feels sensitive and uncomfortable. Meals you've always loved seem to settle differently now.

→ Start with SeaQuo® Gut Repair

Your gut runs your week

Your gut keeps you guessing. You're tired of planning your days around food, stress and symptoms you can't predict (always taking a mental note of where the bathroom is).

→ Start with SeaQuo® Gut Repair

Fucoidan – the ocean's best-kept secret, until now.

Fucoidan is a bioactive compound found in brown seaweed. Naturally abundant in only a handful of species – wild-sourced from cold, remote waters – it's as rare as it is remarkable.

Over 4,000 studies have explored its role in immune resilience, gut balance, and overall wellbeing. It's even thought to be one of the forces behind the Okinawans' famously long, vital lives. We're bringing it out of the science journals and into your daily ritual.

  • Immune resilience
  • Gut balance
  • Skin health
  • Energy & vitality
  • Anti-inflammatory
  • Antioxidant

Find Your SeaQuo®

Best for

Daily immune resilience, glowing skin, digestive support and whole-body vitality.

Capsule · Daily Ritual

SeaQuo® Immune

  • Certified organic Undaria pinnatifida seaweed, naturally rich in fucoidan
  • With key supportive nutrients – vitamin C and zinc
  • Whole-body support for immune function, skin, digestive health and antioxidant protection
  • Wild-harvested from pristine waters off Tasmania's east coast
  • Take 2 capsules daily
Explore Immune
Best for

A foundational gut reset. Repair the gut lining, relieve bloating, discomfort and irregularity.

Powder · 8-week protocol

SeaQuo® Gut Repair

  • High-strength certified organic fucoidan for targeted gut support
  • 6 clinically researched ingredients, including PHGG, zinc carnosine and ginger root
  • Supports gut barrier integrity, bowel regularity and digestive comfort
  • Naturopath-developed 8-week program
  • Mix with water, juice or a smoothie – enjoy the mild pineapple citrus flavour
Explore Gut Repair
Save 40% during sale
Best for

Skin that feels reactive, dull or out of balance, with targeted support for the gut-immune-skin connection.

Bundle · Best value

SeaQuo® Skin + Gut

  • Includes Immune capsules + Gut Repair powder together in one daily ritual
  • Antioxidant and anti-inflammatory ingredients to assist skin concerns
  • Helps maintain digestive comfort, bowel regularity and gut barrier integrity
  • Vitamin C and zinc support collagen formation, skin health and immune function
  • Take 2 scoops of Gut Repair powder and 2 Immune capsules daily
Explore Bundle

The evidence speaks for itself.

01·Immune resilience

A relentless week at work. Poor sleep. Ongoing stress. Your immune system feels it first.

Fucoidan interacts with immune cells to support balance and help the body respond to everyday immune challenges. 


A pilot study in athletes found that fucoidan helped restore mucosal immune function and antimicrobial peptide levels after intense training. This suggests fucoidan may help keep the immune system resilient during times of stress or fatigue, especially important when your body is worn down from training, illness or everyday life. 

Source: Cox et al., Mar Drugs, 2020. PMID 32759709

Fucoidan interacts with gut-associated immune cells, enhancing immune balance and helping the body respond to gut-related immune challenges.

Source: Yang & Lim, Mar Drugs, 2021. PMID 34436275
02·Anti-inflammatory

Many modern health concerns (such as persistent fatigue, brain fog, and skin and digestive issues) trace back to low-grade inflammation. Fucoidan helps downregulate the body’s pro-inflammatory pathways, helping to soothe gut irritation and calm inflammation throughout the body. 


In a 12-week randomised controlled trial, participants taking fucoidan showed lower levels of three key markers of systemic inflammation.

Source: Liu et al., Int J Biol Macromol, 2024. PMID 39645105
03·Microbiome balance

A balanced gut microbiome shapes how you digest, absorb and feel each day. Fucoidan works in a prebiotic-like way: early research, including animal studies, suggests it may nourish beneficial bacteria and tip the balance towards a healthier microbiome.


Emerging research suggests fucoidan may selectively support beneficial gut bacteria, contributing to a balanced microbiome and improved gut function.

Source: Elwakil et al., EXCLI J, 2023. PMID 37534219

Research suggests fucoidan may enhance gut microbiota composition and support healthy digestive function.

Source: Yang & Lim, Mar Drugs, 2021. PMID 34436275

In mice, fucoidan from Undaria pinnatifida seaweed increased beneficial bacteria, including Bacteroides/Prevotella, Akkermansia muciniphila and Lactobacillus, and notably reduced the Firmicutes/Bacteroidetes ratio, indicating improved gut microbiome health.

Source: Yang et al., Mar Drugs, 2024. PMID 39590765
04·Antioxidant defence

Each day, your cells meet free radicals as part of life in motion. Sunlight, pollution and environmental stressors can add to this load, placing more demand on your antioxidant defences.

Fucoidan shows promising antioxidant activity, helping to neutralise the free radicals that wear the body down.


Reviews of recent studies document fucoidan’s antioxidant activity and the factors that mediate its therapeutic effects.

Source: Wang et al., Mar Drugs, 2019. PMID 30897733

Fucoidan from Undaria pinnatifida seaweed demonstrated antioxidant efficacy in vitro and in vivo.

Source: Phull et al., Int J Biol Macromol, 2017. PMID 28104371
05·Skin protection

Dull, congested or reactive skin can reflect what is happening beneath the surface.

By supporting the gut environment and calmer inflammatory responses, fucoidan works with the skin from within. In laboratory (cell) studies, it has also been shown to support the skin’s collagen maintenance and help defend against UV-related breakdown.


In human skin-cell studies, fucoidan increased type I procollagen synthesis and inhibited UVB-induced MMP-1, the enzyme that breaks down collagen.

Source: Moon et al., Eur J Dermatol, 2009. PMID 19129083

A review of seaweed bioactives highlights fucoidan’s anti-photoageing and potential skin health benefits.

Source: Pangestuti et al., Mar Drugs, 2021. PMID 33809936
East Coast, Tasmania

Hand-harvested from some of the most pristine waters on earth.

It begins in the cold, clean waters of Tasmania, where our fucoidan-rich Undaria pinnatifida naturally thrives. The seaweed is carefully foraged by hand from the wild coasts. It is then air-dried and finely milled into a powder, before being rigorously tested for purity and potency.

SeaQuo® Immune uses the seaweed spore, as this part of the plant contains the highest concentration of fucoidan in its untouched form, together with its wide array of naturally occurring nutrients.

SeaQuo® Gut Repair contains a high-strength certified organic fucoidan extract for targeted gut and anti-inflammatory support.

A family legend, decades in the making

Hi, we're the mother-daughter duo behind SeaQuo.

The SeaQuo story began decades ago in Tasmania, with a family discovery of fucoidan's extraordinary potential. This remarkable seaweed compound, found right on our doorstep, ignited a passion for sharing its benefits with the world.

High-quality fucoidan requires pure waters, careful harvesting and specialised extraction methods, making it far less accessible than many other wellness ingredients.

SeaQuo was born with a simple mission: to make the benefits of fucoidan accessible to more people. Using organic seaweed, wild-sourced from pristine waters and naturally rich in fucoidan, SeaQuo brings this powerful marine ingredient into an easy daily ritual.

With care, Sara & Olivia

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