Giant Spined Sea Star (Pisaster giganteus): Species Profile
Meet the giant spined sea star, Pisaster giganteus — a blue-gray, knobby-armed giant of kelp-edge sand flats that hunts sand dollars and can span half a metre.
Dr. Mara Ellison ·
10 articles
Meet the giant spined sea star, Pisaster giganteus — a blue-gray, knobby-armed giant of kelp-edge sand flats that hunts sand dollars and can span half a metre.
Dr. Mara Ellison ·
Profile of the great sculpin — one of the largest sculpins of the North Pacific, its spiny head, ambush hunting and role in cold kelp-edge food webs.
Dr. Mara Ellison ·

With up to sixteen arms and a taste for other sea stars, the morning sun star is the kelp forest's fastest hunter — and a weathervane of sea star wasting.
Dr. Mara Ellison ·
Evasterias troschelii, the mottled or false ochre star — the soft-bodied, deep-dwelling predator that picks off limpets, whelks and baby sea stars.
Dr. Theo Nakamura ·
East Pacific red octopus Octopus rubescens: den middens, colour-flash camouflage, egg brooding and night hunting in California's kelp forests.
Dr. Theo Nakamura ·

Profile of the buffalo sculpin — its jutting preopercular spines, reported venom, bright guarded egg masses and life in northeast Pacific kelp beds.
Dr. Mara Ellison ·

Meet the giant Pacific octopus: the world's largest octopus, a kelp-forest den-dweller with three hearts, blue blood and one shot at motherhood.
Dr. Theo Nakamura ·
The spiny sun star is a many-armed predator of cold reefs in both northern oceans. How to identify Crossaster papposus, what it eats, and why it matters.
Dr. Mara Ellison ·
Meet the ochre sea star, the purple tidepool predator whose removal in a famous 1960s experiment coined the keystone species concept.
Dr. Theo Nakamura ·
Ceratostoma foliatum, the leafy hornmouth, is a winged predatory snail of Pacific kelp reefs — a slow driller of mussels and barnacles.
Dr. Mara Ellison ·