Phylum:

Echinodermata

Class:

Echinoidea

Habitat:

Hard bottom, red algae community more rarely also in seagrass meadows

Occurrence:

Mediterranean and Atlantic
Up to 80 m depth; 0 to 30 m more common

Size:

Appearance:

Colour from olive green to brown with various shades of purple
Rounded shell, low, flattened dorsally. Ambulacral feet with suction cups on the upper side, with which the stone urchin can hold on to algae, parts of shells or similar. to camouflage itself.