Abstract
Information on the littoral fauna of Rockall (lat. 57° 36′ 20” N, long. 13° 41′ 32” W) is limited to the report by Crisp (1956) on a collection made during the occasion of the annexation of Rockall to the British Crown in 1955. An historical survey (Fisher, 1956) reveals that only once previously has a marine biological (phycological) collection been taken from the rock, during a landing from the French’ Pourquoi-Pas ?’ in 1921 (Charcot, 1921; Hamel, 1922).