Big Skate (Beringraja binoculata): Species Profile
The big skate is the Pacific's largest skate — a 2.4-metre flatfish-eyed predator of the kelp-edge sands, famous for giant mermaid's-purse egg cases with twins inside.
Dr. Mara Ellison ·
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.
The big skate is the Pacific's largest skate — a 2.4-metre flatfish-eyed predator of the kelp-edge sands, famous for giant mermaid's-purse egg cases with twins inside.
Dr. Mara Ellison ·
A field guide to Big Sur's remote kelp forests: why the vertical coast grows them, how deep canyons feed them, and how anyone actually reaches them.
Jack Callum ·
How biodiversity credit markets actually work — who issues, who buys, how prices form, and the due-diligence questions that separate real nature finance from noise.
Priya Raman ·
Biodiversity credits need a unit. Habitat hectares, species richness, condition scores, eDNA indices — the metrics on the table, and what each one misses.
Dr. Mara Ellison ·
Diverse kelp forests ride out marine heatwaves that wipe out simple ones. Here's the ecology of the biodiversity–stability relationship — and how it guides restoration.
Dr. Mara Ellison ·
A marine larva picks its lifelong address in minutes, guided by microbial slime and chemical whispers. How biofilms and settlement cues decide who settles where.
Dr. Theo Nakamura ·
What's that growing on your lines? A field guide to identifying fouling organisms, telling harmless from harmful, and controlling them without wrecking your site.
Naomi Reyes ·

Glowing waves, sparkling wakes and milky seas: the chemistry and ecology of bioluminescence, and how to see the ocean light up yourself.
Dr. Mara Ellison ·
Dinoflagellate light turns kelp bays into liquid stars on warm summer nights. Where and when to paddle for bioluminescence, and how to do it right.
Tom Okafor ·
You don't need fins to love a kelp forest. Here's how to read the seabirds that work its surface — murres, puffins, cormorants and gulls, all season long.
Tom Okafor ·
The black-and-yellow rockfish holds one crevice for years and defends it with venom-tipped spines — a lesson in how site-attached reef fish live and recover.
Dr. Elias Brandt ·
The black croaker drums after dark in Southern California's kelp beds. How to identify Cheilotrema saturnum, where to find it, and why it sings.
Dr. Mara Ellison ·
The blackeye goby's hovering economy: how a 10 cm fish harvests plankton over reef edges, feeds the food web, and tells surveyors what a reef is doing.
Tom Okafor ·
Black rockfish: the dark, schooling Sebastes of northeast Pacific kelp edges — identification vs blue rockfish, life history, fishery and conservation.
Dr. Mara Ellison ·
In the brackish, landlocked Black Sea, Cystoseira barbata once built kelp-like forests on shallow rock. Eutrophication broke them; now the coast is rebuilding.
Dr. Lena Fischer ·
The black surfperch (Embiotoca jacksoni) is the thick-lipped, slow-browsing seaperch of California kelp beds — live-bearing, territorial and endlessly photogenic.
Dr. Mara Ellison ·
The black-and-yellow rockfish is one of the most boldly patterned fish of California's shallow kelp reefs — dark as kelp shadow, patched with shout-yellow.
Dr. Theo Nakamura ·
Pale, black-eyed and hovering nose-down over the reef: how to find, identify and read the blackeye goby, one of the kelp forest's most telling fish.
Dr. Mara Ellison ·
The blacklip abalone is southern Australia's largest abalone — a kelp-fed reef grazer that supports one of the world's most valuable wild shellfish fisheries.
Dr. Theo Nakamura ·
The blacksmith (Chromis punctipinnis) is the blue-grey damselfish clouding over California kelp beds. Profile: nesting wars, cleaner queues and plankton patrol.
Tom Okafor ·

Bladderwrack is the Atlantic's most familiar rockweed — and a genuine cooking ingredient. Flavour, blanching, drying, broths, and the iodine conversation.
Sofia Andersson ·
Henricia leviuscula, the scarlet blood star of Pacific reefs — smooth-skinned, patient, and able to catch plankton with its stomach. A complete species profile.
Dr. Mara Ellison ·
Blue bonds and debt-for-nature swaps are converting national debt into marine protection. How the deals work, who's done them, and what they fund.
Priya Raman ·
Adaptation finance has no tonne to sell — so how does ocean nature pay? The instruments, metrics and cases for kelp restoration as bankable adaptation.
Priya Raman ·