The Marine Diaries

What The Marine Diaries does

The Marine Diaries Ltd is a UK-registered non-profit (private limited company) founded in 2017 and headquartered in London, operating on a remote, volunteer-driven model with a team of 1–10 unpaid staff. Its stated mission is ocean science communication and marine conservation, and it serves the general public, educators, and conservation-aligned audiences through freely accessible educational content covering topics such as plastic pollution and marine ecosystems.

The organization's core offerings are a content library and program portfolio that includes the Plastic Not Fantastic Campaign (launched 2019), the Marine Ecosystem Diaries project (launched 2021), and the Adventures program. Content is delivered through a Squarespace-hosted website, YouTube-based webinars, and a Squarespace Email Marketing Service newsletter, with no proprietary technology platform or proprietary data assets disclosed. Partnerships with WaterBear (Impact Partner) and coalition memberships extend distribution, while 1% for the Planet membership provides a framework for corporate sponsorship.

The business model is donation- and sponsorship-funded rather than transaction-based. There is no priced product or subscription; revenue is sourced from individual donations and a small number of named corporate sponsorships (including Scrumbles in 2025 and Greetwell in 2024). The organization has stated that approximately £100 per month could cover operational costs, indicating a very modest financial footprint and no commercial scaling mechanism in place.

Name

The Marine Diaries

Legal name

The Marine Diaries Ltd

Website

https://themarinediaries.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

The Marine Diaries Ltd is a UK-registered non-profit (founded 2017) that communicates ocean science and marine conservation to the general public through free digital content, including the Marine Ecosystem Diaries project and the Plastic Not Fantastic Campaign, funded by donations and corporate sponsorships.

Ownership category

akta.pro rank

Product category

Ocean Conservation Education

NAICS

Tour Operators (56152)

akta.pro primary industry

Marine Conservation & Citizen-Science Experiences (reef monitoring, turtle walks) (THAAAIAH)

akta.pro secondary industry

Marine Wildlife & Coastal Nature Tours (Whale/Dolphin Watching, Sea Kayaking) (THAAAEAD)

Keywords

• Ocean science communication
• Marine conservation media
• Ocean education content
• Non-profit digital media
• Marine awareness campaigns

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Digital Commerce or Content

Cost components

Marketing or Sales, Operations, Technology or R&D, Personnel, Infrastructure

Revenue model

1. Individual Donations: The Marine Diaries relies on individual donations to fund operations. Donations contribute to website, email, and marketing costs. A donation of £100 per month could cover operational costs entirely.
2. Corporate Sponsorship (1% for the Planet): The Marine Diaries is part of the 1% for the Planet network. Corporate sponsors (Scrumbles for 2025, Greetwell for 2024) support through their 1% for the Planet commitment. Businesses can also arrange bank transfers for financial donations or provide in-kind donations of services.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

The Marine Diaries is a non-profit that produces and distributes free digital content (blog articles, videos, newsletters, social media posts) and organizes ocean expeditions to communicate ocean science and promote marine conservation to the general public. All products and resources are offered at no cost, with operations funded by individual donations and corporate sponsorships through the 1% for the Planet network.

Product overview

The Marine Diaries is a non-profit ocean science communication initiative operating as a content platform with multiple interconnected products. The core offerings include the Marine Ecosystem Diaries (an educational project covering nine marine ecosystems with articles, videos, and free posters), the Plastic Not Fantastic Campaign (a digital awareness campaign on plastic pollution), Adventures (expedition experiences), Webinar Series (free educational events), Blog Content (organized into themed series covering conservation, marine organisms, climate, pollution, careers, and underwater film), The Weekly Splash Newsletter (weekly email updates), Social Media Takeover Program (community engagement), and Ocean Careers Resources (career guidance). All products serve the mission of communicating ocean science to the general public and inspiring ocean conservation.

Differentiator

Problem solved

Functional benefit

Products and services

• Marine Ecosystem Diaries An ocean literacy project covering nine marine ecosystems — coral reefs, open ocean, hydrothermal vents, kelp forests, seagrass beds, rock pools, mangrove forests, shellfish reefs, and polar seas — delivered through educational articles, videos, and free illustrated downloadable posters for the general public.
• Adventures Expedition experiences offering participants the opportunity to join The Marine Diaries on ocean adventures, with subscribers receiving exclusive early access via the Weekly Splash newsletter.
• Webinar Series Educational webinar events providing free ocean education content to the public, covering topics such as whale-watching tourism impacts and other ocean conservation subjects, distributed via the YouTube channel.
• The Weekly Splash Newsletter Weekly email newsletter delivering ocean news, scientific research updates, blog releases, project announcements, and opportunities directly to subscribers' inboxes, with exclusive early access to Adventures.
• Ocean Careers Resources Resources and career guidance for entering the marine conservation industry, including tips and insights from the volunteer team.
• Plastic Not Fantastic Campaign A digital awareness campaign launched in June 2019 focusing on plastic pollution, covering plastic in fashion, food & drink, health & beauty, and 'biodegradable' plastics, and engaging over 35 stakeholders across the plastisphere.

Quantifiable outcome

• The Marine Ecosystem Diaries project covers nine marine ecosystems, all of which play a part in direct support of over 3 billion people.
• +1 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Eight partnerships are on record, tiered core and minor.

• WaterBearcoreStrategic or Co-development PartnerWaterBear is the world's first interactive streaming platform dedicated to the future of the planet. The Marine Diaries has joined the network as an Impact Partner, expanding their reach to WaterBear's audience.
• UN World Oceans DaycoreStrategic or Co-development PartnerThe Marine Diaries is proud to be a Friend of UN World Oceans Day - celebrated every year on 8th June.
• Ocean Culture LifecoreStrategic or Co-development PartnerThe Marine Diaries is a Guardian for Ocean Culture Life - a global community of storytellers, photographers, filmmakers, conservationists and ocean lovers.
• EU4Ocean CoalitioncoreStrategic or Co-development PartnerThe Marine Diaries is part of the EU4Ocean Coalition set up by the European Commission. This coalition aims to increase Ocean Literacy across Europe.
• Stop Finning EUminorGTM or Marketing PartnerAs an official supporter of Stop Finning EU, The Marine Diaries calls on people to sign the petition to end the trade of shark fins from Europe.
• Transform Bottom TrawlingminorStrategic or Co-development PartnerAs a member of the Transform Bottom Trawling coalition (by Blue Ventures), The Marine Diaries is calling for bottom trawling to be urgently tackled by all coastal nations.
• Ocean Alliance Against Offshore DrillingminorStrategic or Co-development PartnerThe Marine Diaries is part of the Ocean Alliance Against Offshore Drilling - calling for an immediate ban on all new oil and gas developments in UK seas.
• Stop Funding OverfishingminorStrategic or Co-development PartnerThe Marine Diaries is part of the Stop Funding Overfishing campaign - calling for an end to harmful fisheries subsidies.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Blue Marine Foundation: UK-based marine conservation foundation focused on ocean protection through campaigns, policy, and storytelling. Geographically and thematically aligned with TMD's UK base and conservation communication focus.
• 5 Gyres: Non-profit focused on ocean plastic pollution research, education, and citizen-science engagement. Comparable to TMD's plastic-pollution campaigns and ocean-literacy educational resources.
• Project AWARE: Global non-profit for ocean protection driven by the dive community, with strong education and advocacy programmes. Comparable marine-conservation communication scope, with a more focused scuba-community audience.
• SeaLegacy: Ocean storytelling and visual communications organisation using photography and film to drive ocean conservation. Comparable to TMD's 'Behind the Lens' underwater-film editorial focus and visually-driven content library.
• Mission Blue: Sylvia Earle's ocean-protection organisation that combines storytelling, education, and a network of marine Hope Spots. Comparable mission and content-platform approach, though significantly larger and more established.
• Lonely Whale: Digital-first ocean advocacy organisation using social media, storytelling, and campaigns (e.g., plastic straws) to drive behavioural change. Closely comparable to TMD's content-led, community-driven approach to ocean conservation communication.
• WaterBear Network: Interactive streaming platform dedicated to planet stories; TMD is already a WaterBear Impact Partner. Highly comparable as a distribution channel for ocean conservation content, and a natural partner/peer.
• Oceanic Preservation Society: Producer of the 'Racing Extinction' and 'The Cove' ocean advocacy films. Comparable to TMD's use of visual storytelling (Behind the Lens, video ecosystem diaries) to drive conservation outcomes.
• Plastic Pollution Coalition: Global alliance focused on plastic pollution awareness and education through digital content and campaigns. Directly comparable to TMD's 'Plastic Not Fantastic' campaign and broader plastic-pollution editorial stream.

Broad incumbents

• Ocean Conservancy: Large, established marine conservation non-profit running global campaigns (e.g., International Coastal Cleanup). Operates in the same ocean-protection space with broader resources than TMD, useful as a scale benchmark.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xtwitter.com/TheMarineDiaries
• YouTubeyoutube.com/playlist?list=PLX7xY8mKbMAST9pTw97jMBQcBoI3-5i6x
• Facebookfacebook.com/TheMarineDiaries
• Instagraminstagram.com/themarinediaries
• TikToktiktok.com/@themarinediaries

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

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 The Marine Diaries