Celtic Sea Minerals

What Celtic Sea Minerals does

Celtic Sea Minerals (legal entity Marigot Ltd) is an Irish marine mineral company founded in 1993 and headquartered in Carrigaline, Cork, that develops and sells animal nutrition additives derived from sustainably harvested calcareous marine algae (Lithothamnion spp.) and brown seaweed (Ascophyllum nodosum). Its product portfolio addresses five primary livestock segments: Acid Buf rumen buffer formulations for dairy, beef, and sheep; Prosea for swine reproductive performance; Marisert for shrimp aquaculture; Celtimin for poultry eggshell quality; and Dri-Li Extra, a bedding conditioner with yucca-based ammonia binding. The underlying technology relies on the honeycomb structure of Lithothamnion for slow controlled mineral release (74 bioavailable minerals claimed) and on Laminarin/Fucoidan bioactives from Ascophyllum nodosum for metabolic and anti-inflammatory support, with all efficacy claims backed by a 160+ paper research portfolio produced through the dedicated Marigot Research Centre.

The company operates a sales-led B2B go-to-market, selling packaged feed additive SKUs (20-25kg bags and bulk) on a pay-as-you-go unit pricing basis directly to animal feed producers, integrators, and farmers, supplemented by a global partner and distributor network. Distribution covers 70+ countries with all manufacturing and quality operations compliant with FEMAS, GMP+, Organic Trust, and ISO 9001:2015. Headcount stands at approximately 25 employees, no external funding rounds or M&A activity are disclosed, and the entity remains privately held under Marigot Ltd.

Commercial activity in 2025-2026 indicates an active expansion phase: a redesigned website launched in November 2025, multi-region trade show commitments including VIV India 2026, VIV MEA 2025, and Aqua Nor 2025, and continued product line extension via Dri-Li Extra. Quantified on-farm outcomes referenced in the source material include 6% feed conversion ratio improvement versus sodium bicarbonate, 0.13 kg ECM per kg DMI milk production efficiency uplift, 2+ kg additional dry matter intake per head per day under heat stress, and 29% larger shrimp size at 47 days post-larval with 3% Marisert inclusion.

Name

Celtic Sea Minerals

Legal name

Marigot Ltd

Website

https://celticseaminerals.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

11–50 employees

Short description

Celtic Sea Minerals (Marigot Ltd) is an Irish marine mineral company founded in 1993 that develops and sells Lithothamnion- and seaweed-based feed additives for dairy, beef, sheep, swine, poultry, and aquaculture, distributed in 70+ countries through B2B direct sales and partner networks.

Ownership category

akta.pro rank

Product category

Animal Feed Additives

NAICS

Other Animal Food Manufacturing (311119)

SIC

Food And Kindred Products (2000)

akta.pro primary industry

Mineral & Salt Products for Ruminants (Free-Choice Minerals, Salt Blocks) (AFADAAAF)

akta.pro secondary industries

Medicated & Functional Ruminant Feed (Ionophores, Buffers, Yeast/Probiotics, Mycotoxin Binders) (AFADAAAL), Functional & Health Aquaculture Feed (Immunity, Disease Mitigation) (AFADADAI), Aquaculture Feed & Nutrition (farm-level feed programs) (AFAEAAAL)

Keywords

• Marine mineral supplements
• Animal feed additives
• Rumen buffer products
• Livestock nutrition solutions
• Aquaculture feed ingredients

Headquarters

HQ city

Carrigaline

HQ country

Ireland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Animal Nutrition Products: Sale of marine mineral-based feed additives and nutritional products for livestock including ruminants, swine, poultry, and aquaculture. Products are sold in various packaging sizes (20kg, 25kg, bulk bags) to animal feed producers, integrators, and farmers worldwide.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Celtic Sea Minerals manufactures and sells marine-derived animal nutrition feed additives — primarily Acid Buf rumen buffers for dairy, beef, and sheep; Prosea for swine; Marisert for shrimp/aquaculture; and Celtimin for poultry — built on sustainably-harvested Calcareous Marine Algae (Lithothamnion spp.) and brown seaweed (Ascophyllum nodosum). Products are sold in standardized packaging (20kg, 25kg, bulk bags) to feed producers, integrators, and farmers globally for use in improving rumen health, feed efficiency, animal performance, and animal welfare outcomes.

Product overview

Celtic Sea Minerals offers a portfolio of marine-derived animal nutrition products based on sustainably-harvested seaweed and calcareous marine algae (Lithothamnion spp.). The core product line includes Acid Buf (available in Dairy, Beef, and Sheep formulations) as a rumen buffer for ruminants; Prosea for swine reproductive performance; Marisert for aquaculture/shrimp; and Celtimin for poultry eggshell quality. Dri-Li Extra is a complementary bedding conditioner product. All products leverage the honeycomb structure and bioavailable mineral content of marine algae to support animal health, feed efficiency, and productivity across multiple livestock species.

Differentiator

Problem solved

Functional benefit

Products and services

• Acid Buf (Dairy) Natural rumen buffer derived from sustainably-sourced Calcareous Marine Algae (Lithothamnion spp.) formulated for dairy cattle to stabilize rumen pH, support digestive health, improve feed efficiency, and provide bioavailable marine minerals. Used in high-concentrate feeding systems for performance, transition, heat stress, efficiency, calves, milk fat, methane, and buffer applications.
• Acid Buf (Beef) Natural seaweed-derived rumen buffer formulated for beef cattle that stabilizes rumen pH, improves feed conversion into daily liveweight gain, and reduces incidence of health issues such as bloat and lameness. Targeted at feedlot and beef cattle operations for heat stress and performance applications.
• Acid Buf (Sheep) Natural seaweed-derived rumen buffer for sheep that reduces Sub-Acute Ruminal Acidosis (SARA) incidence, improves digestion, increases daily liveweight gain, and improves feed efficiency in fattening lambs. Recommended at 10-15g/head/day or 5kg per ton of compound feed.
• Prosea Marine-derived ingredient combining Ascophyllum nodosum (brown seaweed) and Calcareous Marine Algae Lithothamnion spp. for swine. Improves farrowing outcomes, reduces sow farrowing time, increases piglet weaning weights, and supports metabolic efficiency and colostrum quality via Laminarin and Fucoidan bioactives. Recommended at 4kg per tonne of feed.
• Marisert Plant-based marine mineral complex for aquaculture/shrimp containing brown seaweed extract and marine red seaweed. Delivers 72+ macro and trace minerals to enhance shrimp moulting, disease resistance, water quality, and overall health. Recommended at 3kg per tonne.
• Celtimin Marine-derived feed component for poultry delivering 74 bioavailable minerals. Increases eggshell strength, improves laying percentage in late-lay, extends the laying period, and maintains bone health through optimal dietary calcium and phosphorous delivery. Available in powder, granular, and coarse (2-5mm) forms at 5kg per tonne of feed.
• Dri-Li Extra Next-generation bedding conditioner with high alkaline pH for animal housing hygiene. Suppresses bacteria, absorbs moisture, binds ammonia through natural yucca extract, and reduces enteric pathogen pressure across ruminant, pig, and poultry housing. Recommended at 50-110 g/m².

Quantifiable outcome

• Cattle supplemented with Acid Buf maintained considerably higher feed consumption during heat stress, consuming more than 2 kg additional dry matter per head per day during challenge phases
• +5 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Marigot Research CentrecoreStrategic or Co-development PartnerThe company's dedicated research center providing scientific expertise and R&D capabilities behind all product development. The centre supports the extensive research portfolio including 160+ research papers and 60 peer-reviewed publications.

Scale indicators6 records

Recent moves5 records

Expansion highlights6 records

Broad incumbents

• Alltech: Global animal nutrition company with a broad portfolio of feed additives, mineral programs, and on-farm solutions. Comparable because it competes across multiple of Celtic Sea Minerals' species segments (dairy, beef, swine, poultry, aquaculture) and offers overlapping rumen-health and mineral-buffering categories.
• Cargill Animal Nutrition: Largest global animal nutrition platform with proprietary feed additives, premixes, and species-specific solutions. Comparable because it serves the same feed producers, integrators, and commercial farm buyers as Celtic Sea Minerals, with overlapping rumen-health and aquaculture feed categories at much greater scale.
• Phibro Animal Health: Diversified animal health and nutrition company with mineral nutritional products and feed additive lines. Comparable because its nutritional specialties portfolio directly overlaps with Celtic Sea Minerals' rumen buffer, mineral, and species-specific additive offerings sold through B2B feed mill channels.
• Kemin Industries: Global ingredient manufacturer focused on animal nutrition, health, and feed quality. Comparable because it develops science-backed specialty feed additives targeting ruminant performance, gut health, and feed efficiency — the same problem spaces Acid Buf and Prosea address.
• Pancosma (an ADM company): Specialty feed additive manufacturer (now part of ADM) producing palatants, organic trace minerals, and functional feed ingredients. Comparable because its phytogenic and trace-mineral portfolio overlaps with Celtic Sea Minerals' bioavailable marine mineral positioning, especially in ruminant and swine segments.
• Skretting (Nutreco): Global aquaculture feed leader owned by Nutreco, with functional and health-focused feed ranges for shrimp and salmon. Comparable because it competes for the same shrimp producer customers as Marisert, with established R&D, technical sales, and global distribution infrastructure.
• BioMar Group: Major aquaculture feed manufacturer with global footprint and functional feed ranges targeting shrimp and finfish. Comparable because its aquaculture segment competes directly with Marisert for shrimp producer formulary placement, though at significantly larger scale and broader species coverage.
• DSM-Firmenich Animal Nutrition & Health: Global animal nutrition and health division with deep R&D in vitamins, feed additives, and methane-reduction solutions. Comparable because it competes in rumen efficiency, feed conversion, and sustainability-driven additives — exactly the positioning Celtic Sea Minerals is building around.

Direct peers

• Ocean Harvest Technology: Ireland-based developer of seaweed-based feed ingredients for animal nutrition and aquaculture. Direct peer because both companies commercialize Ascophyllum nodosum and other marine algae extracts into livestock and aquaculture feed markets with similar B2B distribution models.

Emerging players

• Oceanfeed: Smaller specialty player producing seaweed-based animal feed supplements for livestock and aquaculture. Comparable as a niche competitor in the marine-algae feed additive space, though with a narrower species portfolio and smaller commercial footprint than Celtic Sea Minerals.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/celticseamins
• YouTubeyoutube.com/channel/UC75TKbT0qdW2JuwQ23WnBfQ
• LinkedInlinkedin.com/company/celtic-sea-minerals

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Celtic Sea Minerals