Green sea urchin

Green sea urchin

Projects Strongylocentrotus droebachiensis Sea urchins have a hard and rigid exoskeleton. They are also covered with spines for protection. They are grazers or detritus feeders. Two species of echinoderms have been harvested in Icelandic waters, green sea urchin and...
Common sunstar

Common sunstar

Starfishes Crossaster papposus Unlike all other starfishes in Icelandic waters, the sunstars have more than five arms (see also the purple sunstar). In fact, the number of arms differ by individuals, in the common sunstar they are usually 10 to 12. The common sunstar...
Purple sun star

Purple sun star

Starfishes Solaster endeca The purple sunstar is also called the northern sunstar. Unlike most other starfishes in Iceland (except for the common sunstar), the purple sunstar has more than five arms. In fact, they differ by individual but are usually 8 to 10. It can...
Blood star

Blood star

Starfishes Henricia sanguinolenta The blood star is a small or medium sized starfish that can be beautifully red or purple in colour. It is slim and the skin relatively smooth compared to the common starfish. The blood star lives in the entire northern hemisphere,...
Common starfish

Common starfish

Starfishes Asterias rubens Starfishes do not seem particularly cruel at first sight. However, this is very misleading as most are actually vicious predators that live on other invertebrates, especially bivalves. They kill the bivalve by attaching suction feet, which...
Brittle stars

Brittle stars

Invertebrates Ophiuroidea Brittle stars are closely related to starfishes but smaller and more mobile. They have a circular central plate with five narrow arms extending from the plate. They can walk on these arms and are therefore more mobile compared to other...
European edible sea urchin

European edible sea urchin

Echinoderms Echinus esculentus The sea urchins are the most studied echinoderms in Iceland waters and several species are known. The most common species in shallow water are the green sea urchin (Strongylocentrotus droebachiensis) and European edible sea urchin (both...
Sea cucumber

Sea cucumber

Echinoderms Holothuroidea Not many echinoderm species occur in Icelandic waters but they are large and conspicuous animals, and therefore among the best known of marine invertebrates. The five groups of echinoderms have quite different habits, but all have similar...

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