It is separated from neighbouring Kereka Island to the east-northeast by an 80 m wide passage.
The island was first accurately shown on an Argentine government chart of 1957.
Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1959 after the Honorable Samuel Slumkey, a character in Charles Dickens' Pickwick Papers.
This article incorporates public domain material from "Slumkey Island".
This Biscoe Islands location article is a stub.