To see photographs of the Rough-toothed Dolphin (Steno
bredanensis) click here.
Rough-toothed Dolphin (Steno bredanensis)
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Taxonomic name: Steno
The Rough-toothed Dolphin (Steno bredanensis) can be found in tropical
to warm temperate waters with a temperature above 24 degrees Celsius in
Rough-toothed Dolphins are almost always found in deep oceanic waters,
only rarely coming into shallow waters and only then under duress or when
the shallow areas are close to a deep reef drop-off. They are usually
found in small groups up to 50 but may also occur in much larger pods
Rough-toothed Dolphins are distinguished from other dolphin species by
their head, snout and colour pattern. Unlike other similar dolphins the
Rough-tooth Dolphin does not have a clear distinction between the forehead
or melon but instead the long slender beak seamlessly extends from the
forehead or melon. They also have a distinctive colour pattern being dark
gray to black on the back with pink to white spots and blotches on the
flanks extending down to a white or pinkish belly. The lips and lower
jaw are white or pale gray though sometimes this colour may be dark but
with white spots or marks. Flukes and flippers are dark and usually the
eye is surrounded by a dark dusky ring.
Rough-toothed Dolphins are often found among or with other dolphin or
toothed whale species and are usually wary of divers and boats. They feed
on small fish, squid and pelagic octopus. At times they have been seen
to swim "skimming" the surface with snout just under the surface
and the dorsal fin continually exposed.
The Rough-toothed Dolphin can be found in all oceans but is not as common
as other species such as spotted or bottlenose dolphins.