The base of Metridium senile is considerably wider than the column and is attached to rock or another substrate. The column is long, smooth and cylindrical, of a fleshy consistency with a slimy surface lubricated with See more

M. senile is found on the northwest coasts of Europe from the Bay of Biscay north to Norway and Iceland. It also occurs on the east and west coasts of North America and has arrived in South African waters. It is found on the lower shore and the neritic zone See more

M. senile is a predator and catches small organisms floating past in the current. Its diet largely consists of copepods, worm larvae, mollusc larvae, ascidian larvae, amphipods See more

M. senile adheres to rocks, boulders, man-made structures, pebbles and shells. It favours places where the current is strong. Smaller forms inhabit … See more

• Photos of Metridium senile on Sealife Collection See more