[2] It includes some of the largest types of eels, ranging up to 2 m (6 ft) or more in length,[3] in the case of the European conger.

Congers have wide mouths with sturdy teeth, usually a variant of gray or black in coloration.

The Norman taxation Pipe Roll recorded two éperquerie on Guernsey and one on Sark.

In July 2013, a diver was attacked by a European conger eel in Killary Harbour, Ireland, at a depth of 25 metres (82 ft).

The diver reported the creature was more than 1.8 metres (5 ft 11 in) in length and "about the width of a human thigh".