Description: Velvety
black or translucent grey with a cylindrical body.
It can also be blue-black, red-purple, or brown.
It has two siphons (holes) and can be about 1/8 of an
inch to about 5 inches long.
Habitat: Attatched
to rocks and dead coral in harbors and mud flats.
It can be found in very shallow, even partly submerged to
about 15 or 20 feet deep.
Range
(include invasive, native, endemic):
Tropical
Atlantic, Red Sea, Western Indian Ocean, Hawaii, &
Micronesia. It was probably introduced.
Trophic
information: It
filters nutrients out of the water via it's two siphons.