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Image of a rapa whelk, a large marine snail retreated into its shell
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Rapa Whelk

Rapa whelks, native to Asia, have invaded the Chesapeake Bay and are raising...
Lacy Crust Bryozoans
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Lacy Crust Bryozoan

This colony of a lacy crust bryozoan (Membranipora membranacea) started off as just...