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Species
of Special Concern
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Diplosoma
Tunicate - Smooth, thin encrusting colony with grayish
tinge. Often with small white spots - can resemble lace work
growing on algae. Size up to 8". Attached to docks, protected
areas, overgrows other organisms; hard subtidal surfaces. |
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"Mystery"
colonial Tunicate, Didemnum sp. - Cream to white in color.
Gritty. Large colonies with hanging lobes. Colonies up to
12-18". Attached hanging into water; docks and protected
areas; subtidal. |
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European
Oyster/Native Oyster - The Native Virginia Oyster's shape
is highly variable and jagged. The massive, unequal and rough
shell is narrow at the hinge but widens gradually. The shell
has a mild curve. Size to 10". The Invasive European
Oyster is more rounded than native oyster; grayish white,
slightly scalloped. Estuarine, intertidal to subtidal. Size
up to 8". |
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Purple
Anemone - Has up to 200 purple or pinkish tentacles, the
Purple Anemone can grow up to 8 inches (roughly 20 cm). It
lives in the subtidal zone up to 30 ft (9 m) deep, in protected
areas. It was introduced from Europe. This anemone is difficult
to find during the winter, but regrows at the single location
in Massachusetts where it was first observed in warmer weather. |
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Red
Alga - This red algae can grow four to five feet tall.
It has been introduced from Japan to the North Atlantic (mainly
Rhode Island) and England. It can block sunlight to other
organisms and reproduces fairly easily. |
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