Blue Carbon9 min read
Carbon Credit Vintages: Why the Year on a Credit Matters
A carbon credit's vintage is the year its tonne was delivered. Learn why vintages move prices, signal quality and shape honest buyer claims.
Priya Raman ·
The Tidewright Journal
Everything we know about growing back the ocean.
Encyclopedia entries, coastal atlas guides, science explainers, farming know-how and recipes — written by Tidewright’s scientists, engineers, chefs and field crews, and open to everyone.
Blue Carbon9 min read
Insetting vs Offsetting: What Coastal Insetting Could Mean
Carbon insetting funds decarbonisation inside your own value chain instead of buying external credits. Here's what that means for ocean industries and kelp supply chains.
Priya Raman ·
Blue Carbon8 min read
Carbon Insetting: When a Company Restores Nature Inside Its Own Supply Chain
Carbon insetting funds decarbonisation and restoration within your own value chain. A practical guide to designing an ocean insetting program that holds up to audit.
Priya Raman ·
Science11 min read
The Carbonate Buffer: How Seawater Resists — and Records — Acidification
Seawater carries a built-in shock absorber for acidity: the carbonate buffer. How it works, why it's wearing thin, and what it means for shell-builders and kelp.
Dr. Lena Fischer ·
Atlas8 min read
Carmel Bay: Stillwaters, Giant Kelp and Four Decades of Protection
Carmel Bay pairs giant kelp with some of California's oldest marine protection. Explore its reefs, Stillwater Cove and what decades of sanctuary bought.
Dr. Mara Ellison ·
Kitchen7 min read
Carrageen Moss: The Irish Dessert Seaweed, Explained and Cooked
What carrageen moss is, how it sets milk and cream into silky Irish puddings, and a foolproof recipe — plus clearing up the carrageenan confusion.
Sofia Andersson ·
Encyclopedia9 min read
Chain Bladder Kelp: The Canopy With a Rope of Pearls
Cystoseira osmundacea — chain bladder kelp — strings pearl-like floats along California's subtidal rocks. Identification, biology, and why it's no true kelp.
Dr. Mara Ellison ·
Atlas11 min read
The Channel Islands (UK): Kelp at the Warm Edge of the English Range
Jersey, Guernsey, Sark and Alderney: Europe's wildest tidal range, the ormer fishery, the ancient vraic harvest and Britain's southernmost — and warmest — kelp reefs.
Tom Okafor ·
Atlas6 min read
The Chatham Islands: Bull Kelp in the Roaring Forties
800 km east of New Zealand, the Chatham Islands sit in the Roaring Forties: southern bull kelp, rock lobster, Moriori heritage and the Chatham Rise.
Tom Okafor ·
Encyclopedia8 min read
Chestnut Cowry: The Polished Alarm Bell of the Reef
Neobernaya spadicea, the chestnut cowry, is the only cowry native to California — a glossy chestnut shell beneath a blazing orange mantle, grazing the reef by night.
Dr. Theo Nakamura ·
Field Notes8 min read
Field Notes, Humboldt Coast: First Season Learning From Chilean Divers
Tidewright's first Humboldt Coast season: working alongside local diver unions, learning huiro protocols, and finding out what the Chilean coast teaches back.
Jack Callum ·
Encyclopedia9 min read
Taliepus dentatus: Chile's Kelp Crab and Its Working Fishery
The Chilean kelp crab — jaiba marmola — is a spider-crab grazer of great kelp beds and the centre of a diver-run artisanal fishery. A species and livelihood profile.
Dr. Mara Ellison ·
Encyclopedia9 min read
Lessonia trabeculata: Chile's Huiro and Forests of the Humboldt Coast
Lessonia trabeculata, the huiro, builds Chile's great subtidal kelp forests and feeds a global alginate industry. Biology, fishery, ecology and El Niño risk.
Dr. Theo Nakamura ·
Atlas10 min read
The Patagonian Channels: Kelp Inside Chile's Drowned Mountains
Inside Chile's Patagonian channels, the Andes go under the sea — and sheltered waters grow the most extensive giant kelp forests in South America, beside a salmon boom.
Jack Callum ·
Atlas8 min read
Chiloé: Kelp, Salmon Country and the Working Coast of Southern Chile
Chiloé's inland sea holds giant kelp, cochayuyo coasts, blue whales and one of the world's great salmon industries. A guide to Chile's complicated island.
Naomi Reyes ·
Encyclopedia8 min read
China Rockfish: The Yellow-Spotted Night Watchman
The China rockfish is a small, blue-black, yellow-speckled reef fish that rarely leaves its crevice. Biology, identification, habits and conservation.
Dr. Mara Ellison ·
Atlas8 min read
The Chonos Archipelago: Chile's Inland Sea of Channels, Rain and Kelp
Chile's Chonos Archipelago is a drowned maze of rainforest islands, kelp channels, mussel rafts and blue-whale water — a coastal atlas guide to Aysén's inland sea.
Tom Okafor ·
Farming10 min read
Choosing Your First Seaweed Species: A Practical Decision Framework
Sugar kelp or wakame? Tank-grown dulse or longline Ulva? A five-question framework for matching your first farmed species to your site, market and appetite for risk.
Naomi Reyes ·
Atlas9 min read
Clayoquot Sound: Kelp Beds Beneath the Ancient Rainforest
Fjords, surf beaches and kelp forests in one of Canada's most storied sounds — marine life, Nuu-chah-nulth stewardship and a famous conservation history.
Jack Callum ·
Blue Carbon6 min read
Beyond Carbon: Counting the Co-Benefits of Coastal Restoration
A restored kelp forest delivers fish, jobs, cleaner water and coastal protection alongside carbon. Here's how those co-benefits are measured and valued.
Dr. Mara Ellison ·
Careers9 min read
Coastal Engineering Careers: Building With, Not Against, the Sea
Coastal engineers design where land meets water — and the field is pivoting to nature-based solutions. Degree paths, skills, employers and where it's heading.
Dr. Mara Ellison ·
Science9 min read
Feeding the Wrong Forest: How Coastal Eutrophication Crowns Turf Over Kelp
How nutrient pollution from land tips coastal reefs from kelp forest to turf algae, why the shift is so hard to reverse, and what actually brings the canopy back.
Dr. Mara Ellison ·
Science9 min read
Eutrophication on the Coast: When Too Much Food Sinks the Forest
Nutrient pollution feeds opportunistic algae that shade and smother kelp, while rotting blooms strip oxygen. How eutrophication degrades kelp coasts.
Dr. Theo Nakamura ·
Science12 min read
Reading Rocky Shores: The Geomorphology Beneath Every Kelp Forest
Shore platforms, reef relief and rock type decide where kelp can grow. How coastal geomorphology shapes forests — and why restoration starts with reading rock.
Dr. Mara Ellison ·