STRAP TOOTHED WHALE2014
By Amelia Meyer
Scientific Name: Mesoplodon layardii
Other Names: Layard’s Beaked Whale, Strap-Tooth Beaked Whale
Often exceeding six feet in length, the Strap-Toothed Whale is one of the biggest beaked whales still alive. It is most easily identified by the distinctive marbled colours (usually black and white) and the eruption of two prominent teeth in males. These teeth are sizeable, curving back and extending to above the upper jaw. In older individuals, the teeth can reach lengths of about 30 centimetres, even meeting in the middle. As such, they function more to guide soft foods into the mouth via a sucking process. The females are far more difficult to identify for their absence of these two teeth.
The fusiform body of the Strap-Toothed Whale is mainly black or blue-black (and occasionally brown), with areas of white on the head, back and underside. The head has a slight melon and a long, sloping forehead. The white areas often have yellow scars and patches.
The dorsal fin is small and falcate, and the dorsal fins narrow. The fluke, or tail fin, is broad and triangular, with no central notch, giving it a very straight trailing edge. Adults reach an average length of between five and 6.2 metres, and weigh between one and three tonnes.