Internal Waves: The Underwater Tide That Feeds the Kelp
Beneath the surface tide runs a hidden one, pulsing cold nutrient-rich water onto reefs on a fortnightly beat. How the internal tide keeps kelp forests fed.
Dr. Lena Fischer ·
The Tidewright Journal
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.
Beneath the surface tide runs a hidden one, pulsing cold nutrient-rich water onto reefs on a fortnightly beat. How the internal tide keeps kelp forests fed.
Dr. Lena Fischer ·
Internal waves arrive in packets of solitary giants, break underwater, and flood reefs with cold, nitrate-rich water. A field guide to the surf no one sees.
Dr. Lena Fischer ·
The ocean's biggest waves never break the surface. How internal waves ride the hidden boundary between water layers and deliver cold nutrients to kelp forests.
Dr. Lena Fischer ·
The IPCC's 2013 Wetlands Supplement let countries count mangroves, marshes and seagrasses in carbon ledgers. How it works — and what it leaves out.
Priya Raman ·

Kelp forests of Ireland's Atlantic west — the species beneath the cliffs, two centuries of kelp ash money, and a hand-harvest tradition that never died.
Dr. Mara Ellison ·
Irish moss is the small red alga of North Atlantic shores that gave the world carrageenan. Profile: ecology, history, harvest and modern uses.
Dr. Theo Nakamura ·
Irish moss pudding sets warm milk with carrageenan into a soft, old Atlantic dessert. Full recipe, soaking method, the Caribbean drink, sourcing and fixes.
Sofia Andersson ·
Inside the Irish Sea's kelp island — the Manx survey tradition, marine nature reserves, and kelp beds where northern and southern species overlap.
Tom Okafor ·
The kelp of the Manx coast, species by species — wrack zonation, tangle forests in the tide races, the forest's seasons, and the wildlife it feeds.
Dr. Theo Nakamura ·
Twenty-eight miles offshore of Land's End, the Scillies hold England's clearest water, warmest kelp reefs, great grey seal swims and some of British diving's classics.
Tom Okafor ·
Three hours from Tokyo, the Izu Peninsula offers kelp beds, coral outposts, cave dives and hammerhead waters where the Kuroshio brushes the coast.
Tom Okafor ·
Jeju's volcanic coast is Korea's marine frontier — home of the haenyeo women divers, wakame and kombu farms, and a sea warming faster than almost anywhere on Earth.
Tom Okafor ·
Kaikōura packs a submarine canyon, sperm whales and bull kelp into one coastline — and the 2016 earthquake that lifted its reefs rewrote them in a night.
Dr. Mara Ellison ·
A coastal atlas guide to Kamchatka's kelp forests: volcanic coasts, otter-held reefs, salmon-fed waters, and one of the least-disturbed kelp ecosystems on Earth.
Tom Okafor ·
Kapiti Island rises out of Cook Strait's tidal machinery — a predator-free bird sanctuary above water, and protected kelp reefs, seals and blue cod below.
Dr. Mara Ellison ·
Kappaphycus and Eucheuma supply most of the world's carrageenan. How tropical seaweed farming works — lines, 45-day cycles, ice-ice disease and economics.
Naomi Reyes ·
How to plan and paddle a kelp-forest route: wind windows, fog strategy, tide gates, moving through canopy, and the etiquette that keeps otters and seals unbothered.
Tom Okafor ·
A good dive log is more than a souvenir — it's a field notebook. Here's what to record, how to keep it consistent, and how your dives become usable data.
Tom Okafor ·
Kelp forests release iodine gases that seed coastal aerosol particles and change air chemistry. Here's what that really means for clouds — and what it doesn't.
Dr. Lena Fischer ·

Those bulbs along a kelp frond are gas bladders called pneumatocysts. Here's what's inside them, how kelp inflates them, and why a forest floats.
Dr. Theo Nakamura ·
Kelp doesn't just grow — it builds. As an ecosystem engineer, kelp reshapes light, flow, chemistry and shelter to create habitat for thousands of species.
Dr. Mara Ellison ·
Avoided-loss credits pay to stop an ecosystem from dying. For kelp forests the idea holds real promise — and some serious counterfactual traps.
Priya Raman ·
Marine biogeography splits kelp coasts into distinct provinces, each with its own species and history. A tour of the regions — and the barriers that made them.
Dr. Mara Ellison ·
Kelp survives storms not by being strong but by being soft. How flexible stipes, streamlined blades and smart materials let kelp cheat drag — and where the design fails.
Dr. Lena Fischer ·