Field Notes8 min read
Field Notes: Sea Trials for Hull Nine
Four days off Fortescue Bay putting Drifter hull 9 through its first sea trials — what we test, what broke, and why the slow tests matter most.
Jack Callum ·
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.
Field Notes9 min read
Field Notes: Spawn Night with the Kudjela Rangers
A Tidewright field note from Gulf St Vincent: collecting golden kelp broodstock by torchlight with the Kudjela Sea Country Rangers, two hours either side of low tide.
Jack Callum ·
Field Notes8 min read
Field Notes: Returning to Lofoten in the Dark Season
In eight weeks the light goes at 68° north. What Lofoten's first seeded lines did through their first summer, and the plan for going back in.
Jack Callum ·
Field Notes9 min read
Field Notes: Holding a Nursery Together Through the Winter Storms
Tidewright field note from Lofoten: how a kelp nursery survives December — storm triage, line tensioning, and what three Atlantic gales teach a young crop.
Jack Callum ·
Field Notes7 min read
Field Notes: A Ranger Knowledge Exchange in Lofoten
Four Kudjela sea-country rangers fly north to our Lofoten project. A week of sugar kelp, winter light, and two very different coasts trading what they know.
Jack Callum ·
Field Notes8 min read
Field Notes: The School Group That Met a Forest
Twenty-four fourth-graders, forty masks, and one restored kelp bay. Field notes from a Tinderbox school snorkel day — and why it matters to the program.
Jack Callum ·
Field Notes9 min read
Field Notes: Spore Season in Southeast Alaska
Tidewright field note: three September weeks on Sitka Sound collecting kelp sorus — the wild reproduction tissue that seeds every Holdfast line we grow.
Jack Callum ·
Field Notes8 min read
The Harvest Window: Fourteen Days to Pay for a Forest
Fourteen days, one weather window and a quota the reef wrote first — field notes from the harvest fortnight that funds a season on the Humboldt coast.
Jack Callum ·
Field Notes7 min read
Field Notes: A New Urchin Crew's First Week on the Reef
Five trainees, two instructors, one Tasmanian barren. What it actually takes to turn working divers into an urchin-removal crew, and what the first week teaches them.
Jack Callum ·
Field Notes8 min read
Field Notes: A Morning on the Urchin Cull
Dawn on Tasmania's east coast: four divers, two hammers, and a barren the size of a football pitch. What an urchin cull actually looks like from inside the vis.
Jack Callum ·
Atlas9 min read
Fiordland: Black Coral Trees and Kelp Beneath a River of Rain
Milford, Doubtful and Dusky: a guide to Fiordland's drowned glacial fjords, where a dark freshwater lid hides kelp forests and shallow-growing black coral.
Dr. Lena Fischer ·
Field Notes9 min read
Field Notes: Issuing Our First Biodiversity Credit — What It Took
The first biodiversity credit we ever issued took eleven months, three verifiers and one metric we threw away. Field notes from inside the process.
Priya Raman ·
Explore7 min read
Your First Boat Dive: What Actually Happens, Step by Step
First time diving from a boat? Here is the whole day — boarding, briefing, entries, exits and the unwritten rules — so nothing on deck surprises you.
Tom Okafor ·
Field Notes9 min read
Field Notes: The First Harvest in Lofoten
Eighteen months after Lofoten's polar-night seeding, the sugar kelp belt met its first harvest. Field notes from the week the fleet got paid in kelp.
Jack Callum ·
Explore8 min read
Your First Liveaboard: How to Choose and What to Pack
A liveaboard dive trip is the best way to see remote kelp coasts — if you pick the right boat. Here's how to plan, pack, and not be that passenger.
Tom Okafor ·
Explore8 min read
Your First Winter Dive Weekend: Cold Hands, Clear Water
Winter is the secret season: empty car parks and the clearest water of the year. How to plan a first cold-weather dive weekend that ends warm, safe and smug.
Tom Okafor ·
Farming10 min read
From Fisher to Farmer: How Working Boats Switch to Seaweed
The realistic path from fishing to kelp farming: which skills transfer, which do not, what the economics look like in years one to three, and how to de-risk the switch.
Naomi Reyes ·
Science11 min read
Fjords Explained: Deep Water Behind a Sill
Fjords are drowned glacial valleys with a rock sill at the door. How that sill shapes circulation, deep-water renewal, anoxia risk — and why fjords shelter rich kelp.
Dr. Mara Ellison ·
Encyclopedia9 min read
Flat Abalone: The Northernmost of California's Abalones
The flat abalone is a deep, flattened grazer of Oregon and northern California reefs — the most northern-centred of California's abalones, never common and rarely seen.
Dr. Mara Ellison ·
Encyclopedia8 min read
Flat Porcelain Crab (Petrolisthes cinctipes): The Filter-Feeder Under the Rock
The flat porcelain crab packs under Pacific shore rocks by the hundred, sifting plankton with feathery mouthparts and shedding legs it can calmly regrow.
Dr. Theo Nakamura ·
Blue Carbon7 min read
Consent Before Credits: FPIC and Community Rights in Blue Carbon Projects
What free, prior and informed consent means in practice for blue carbon projects — who must be asked, what must be shared, and how consent is kept alive.
Priya Raman ·
Explore9 min read
Equalization for Freedivers and Snorkellers: Frenzel Basics
Learn how to equalize your ears for freediving and snorkelling: Valsalva vs Frenzel, common mistakes, daily drills and when to call a dive short.
Tom Okafor ·
Explore8 min read
Line Training Among the Kelp: Freediving Skills in a Living Forest
Using kelp-forest water for freedive training: setting a line without harming the reef, cold-water adaptations, lanyard choices and site etiquette.
Tom Okafor ·
Explore9 min read
Freediving in Kelp Forests: Breath-Hold Basics and the Buddy Rules That Matter
Your first kelp freedive, done right: breath-hold fundamentals, the buddy rules you never break, choosing a calm beginner site, and what the first session feels like.
Tom Okafor ·