barges - McAllister Artificial Reef

37 ft crane barge
Type:
artificial reef, barges
Depth:
50- 53 ft
Name Description Sunk GPS
60 ft steel Tuesday (?)
Sept 28, 1999
40°32.120′
-73°39.605′
40 ft steel
dredge
Thursday
Sept 28, 2000
40°32.048′
-73°39.326′
40 ft steel
dredge
Thursday
Sept 28, 2000
40°32.015′
-73°39.295′
37 ft steel
crane
2003 40°32.162'
-73°39.481'
37 ft crane barge ( minus crane )

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x-ray

These creatures are all of the order Gastropoda - having a single, often coiled, shell, as opposed to the bivalves, which have two matching shells. Most snails are hermaphroditic. Also, most snails have a right-hand twist to the shell, although there are exceptions.

Right:
X-ray image of a Channeled Whelk, showing internal structure.

Nudibranchs are a form of snail that has lost its shell, while Corollas and Sea Butterflies are snails that have abandoned not just their shells, but the snail-like existence entirely, swimming up into the water column as plankton.