Encyclopedia9 min read
Owl Limpet: The Territorial Gardener of the Rocky Shore
Lottia gigantea, the owl limpet, farms a private algae garden on Pacific rocks and bulldozes rivals off it. Biology, territory defence and status.
Dr. Theo Nakamura ·
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.
Science10 min read
Oxygen Minimum Zones Explained: The Ocean's Midwater Low-Oxygen Layers
What oxygen minimum zones are, where they form, how they shape the largest daily migration on Earth, and why warming is pushing them wider and shallower.
Dr. Lena Fischer ·
Science8 min read
Do Kelp Forests Make the Oxygen We Breathe? What the Budget Says
A little, briefly, and mostly repaid by dusk. The honest math of kelp's oxygen, the atmosphere's vast bank, and why the air won't notice.
Dr. Mara Ellison ·
Encyclopedia9 min read
Pacific Barracuda: The Kelp Forest's Silver Arrow
The Pacific barracuda (Sphyraena argentea) hunts in silver schools over California kelp beds. Profile: biology, range, fishery and how it differs from its tropical cousin.
Dr. Mara Ellison ·
Encyclopedia8 min read
Pacific Bonito (Sarda chiliensis): The Silver Comet Beyond the Canopy
Pacific bonito turn the water beyond the kelp to chrome in warm years. Identification, behaviour, the El Niño connection, and where divers meet these speedsters.
Tom Okafor ·
Encyclopedia8 min read
Pacific Hagfish: The Slimy Deep-Sea Cleaner of the Kelp Coast
The Pacific hagfish (Eptatretus stoutii) is a jawless, knot-tying deep-sea scavenger whose legendary slime and midnight carcass work keep the seafloor clean.
Dr. Mara Ellison ·
Encyclopedia9 min read
Pacific Herring: The Egg-Laying Event That Turns Shores White
Pacific herring (Clupea pallasii): the life cycle behind the spawn that whitens beaches, the predators it feeds, and why kelp beds still matter.
Tom Okafor ·
Encyclopedia9 min read
Pacific Lamprey: The Ancient Traveller Between River and Kelp Coast
Pacific lamprey (Entosphenus tridentatus) is a 450-million-year-old jawless fish that spends years as a filter-feeding larva, hunts the ocean, then returns home.
Dr. Mara Ellison ·
Encyclopedia8 min read
Pacific Sand Lance (Ammodytes personatus): The Buried Forage Fish of the Kelp Edge
Profile of the Pacific sand lance: a pencil-thin forage fish that buries itself in sand beside the kelp forest and feeds seabirds, salmon and whales. Facts and ecology.
Dr. Mara Ellison ·
Encyclopedia10 min read
Pacific Sardine: The Silver River That Feeds the Kelp Coast
Pacific sardine: the ecology of Sardinops sagax, its great twentieth-century collapse and recovery, and why this small fish feeds the whole kelp coast.
Dr. Mara Ellison ·
Encyclopedia7 min read
Pacific Spiny Lumpsucker (Eumicrotremus orbis): The Kelp Bed's Roundest Resident
How to identify a Pacific spiny lumpsucker: field marks, lookalikes, the suction disc, and where to actually find this walnut-sized kelp bed fish.
Tom Okafor ·
Encyclopedia7 min read
Painted Greenling (Oxylebius pictus): The Small Flash on the Reef
Banded like a convict, tusked in miniature, and perched on the rock: how to find and identify the painted greenling of North Pacific kelp beds.
Dr. Theo Nakamura ·
Encyclopedia8 min read
Painted Topshell (Calliostoma zizyphinum): The Jewel Snail of Kelp Rock
The painted topshell is a glossy, conical grazer of Europe's kelp-bed reefs. How to identify Calliostoma zizyphinum, where it lives and how it feeds.
Dr. Theo Nakamura ·
Kitchen7 min read
What to Drink with Seaweed: A Pairing Guide from Sake to Sparkling Water
Pairing seaweed-forward dishes takes minerality, acidity and a light hand. A practical guide to sake, wine, beer and zero-proof pours for the sea-vegetable table.
Sofia Andersson ·
Blue Carbon10 min read
Article 6 and the Ocean: Where Blue Carbon Meets the Paris Agreement
How Article 6 actually works for ocean carbon — ITMO trades, corresponding adjustments, the 6.4 mechanism — and what it changes for blue carbon buyers and coastal nations.
Priya Raman ·
Atlas8 min read
Phillip Island: Kelp Beds Below the Penguin Parade
Under the Bass Strait swell off Victoria's Phillip Island, golden kelp reefs feed seals, whales and the little penguins of Australia's most famous wildlife show.
Tom Okafor ·
Science10 min read
Phycocolloids Explained: The Gels Hidden in Seaweed Walls
Alginate, agar and carrageenan: the gelling polysaccharides inside seaweed cell walls, why each species gives a different gel, and how extraction works.
Dr. Theo Nakamura ·
Encyclopedia7 min read
Pile Perch: The Striped Midwater Browser
The pile perch (Rhacochilus vacca) is the big, deep-bodied seaperch of Pacific kelp forests and pilings — live-bearing, hard-shelled-prey crusher, diver favourite.
Dr. Theo Nakamura ·
Encyclopedia9 min read
Pink Abalone (Haliotis corrugata): The Corrugated Architect of Baja's Kelp Edge
Pink abalone built Baja California's most storied shellfish fishery, then nearly vanished with the kelp. Inside the cooperative-led fight to bring them back.
Dr. Mara Ellison ·
Encyclopedia8 min read
Pink Sea Star (Pisaster brevispinus): The Soft-Bottom Giant of Kelp Country
Meet the giant pink sea star — a two-foot, sand-plowing predator of clams and sand dollars that patrols the soft floors between Pacific kelp forests.
Dr. Theo Nakamura ·
Encyclopedia8 min read
Pinto Abalone: The Northern Grazer Fighting Its Way Back
Hunted to near-collapse, the pinto abalone is being rebuilt by hatcheries and divers in the Salish Sea. Inside North America's meticulous abalone comeback.
Dr. Mara Ellison ·
Kitchen9 min read
Plant-Based Dashi: Kombu, Shiitake and the Vegan Umami Pantry
Build a fully vegan Japanese pantry around dashi: what to stock, a homemade instant dashi powder, label traps to avoid, and a week of plant-based broth cooking.
Sofia Andersson ·
Encyclopedia9 min read
Plumose Anemone (Metridium): Species Profile
Plumose anemones turn cold kelp-coast rock, wrecks and pilings into white forests of feathery tentacles. Meet Metridium, the towering filter feeder.
Dr. Mara Ellison ·
Atlas8 min read
Point Loma: San Diego's Giant Kelp Forest at the City's Edge
The Point Loma kelp forest off San Diego is one of the largest and most-studied giant kelp beds on Earth — a story of pollution, recovery and scientific devotion.
Dr. Mara Ellison ·