Tegula Funebralis
The
Black Turban Snail
(
Tegula funebralis
) is a
gastropod
(snail) that is found along the
Pacific coast
of
North America
from
Vancouver Island
to the
Baja California peninsula
. Most have
shells
20-40 mm in diameter. They fare the best in rocky
intertidal zones
, where they graze on
algae
, microscopic films and
wrack
.
T. funebralis
are
sexually dimorphic
, not
hermaphroditic
. They may live to the ages of twenty or thirty. Predators of T. funebralis include
sea otters
and predatory
sea stars
such as
Pisaster ochraceous
. When fleeing a predator on a sloped substrate, they may simply detatch and roll away. Their shells are often used by
hermit crabs
and appear to be a favorite.
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