Ragworm
Nereis diversicolor
Length up to 10cm

An active, predatory annelid worm which is often abundant in estuaries and on sandy or muddy beaches. Widespread around the coasts of Britain and Ireland. Close examination reveals a toothed proboscis and jaws at the head end with tufts of hair-like chaetae on each of the 100 or so segments. Burrows freely.