Hammer oyster (Malleus sp.)
Cyrene Reef, 26th June 2010
While the white hammer oyster (Malleus albus) has been recorded in Singapore, it is also possible that the black hammer oyster (M. malleus) is present here as well.
Wild Fact Sheets
Form and habit in species of Malleus (including the "hammer oysters") with comparative observations on Isognomon isognomon
