Identification:
The
Dahlia
Anemone is the largest of the common sea anemones
found around the British Isles inhabitating the shallow seas all around
the coast and occasionally found on rocky shores during the colder months
of the year. Despite its large size and spectacular colours it is often
overlooked between the tides, its tentacles covered
in gravel. It is an Arctic species intolerant of
sea
temperatures in excess of 22°C.
DahliaAnemones
Urticina
felina
Photograph
by Joe Bater
Dahlia
Anemone off Brighton, Sussex, by Sean Clark (Link)
Marlin
Web Page for the Dahlia Anemone
30
March 2002 at
Lancing
Beach.
In
this photograph by Ray
Hamblett, you can imagine how a crab could blunder into the sea anemone
and be eaten.
Similar species: Urticina eques
Breeding:
Reproduction (Marlin web page)
Habitat:
Food:
Macrophagous.
Diet includes crab, mussels.
The
diet of the Dahlia Anemone
is known to include large crabs and mussels in
their shells. The mussels are smashed off the rocks by the waves and fall
down into rock gullies where these anemones may congregate. Its method
of feeding on crabs is unclear. I am still unsure whether the crabs blunder
into the tentacles and get swallowed up dead or alive. Aquarium
study sheds no further light on the capture. One spider crab species the
Short-legged
Spider Crab,
Eurynome aspera,was
observed to live amongst the blunt tentacles of this sea
anemone for over a year before being swallowed up over night.
Range:
Worldwide, Arctic and temperate, below 22° C.
American Pacific photographs at:
British
Columbia (Canada) Pacific Ocean photographs
Additional Notes:
Reports:
The
image was taken by Mike Grundon
(I found it, he photographed it!)
The
grid reference, taken from the ordinance survey map sheet 4 HU is 365 205,
south shore of St. Ninian's Isle, west coast of south Shetland mainland.
Information wanted: Please
send any records of this sea anemone, with location, date, who discovered
it, how it was identified, prevalence, common name and any other details
to:
Shorewatch
Project EMail Glaucus@hotmail.com.
All messages will receive
a reply.
|