Facelina bostoniensis (Bill Rudman's Sea Slug Forum) is easy to recognize in the US northeast since it's the only aeolid around with lamellate rhinophores. I observed the one above make a beeline straight toward the cerianthid from at least ten feet away. When it bit onto a tentacle, the cerianthid retracted into the muck, taking the nudibranch with it. A short time later, I came across a second F. bostoniensis emerging from a burrow. It seems as though latching onto a tentacle and being pulled under may be a part of its feeding strategy, much like that of Dendronotus iris.
Nudibranchs of the Northeast covers 28 different species of nudibranchs found along the coast from Canada to New Jersey. It's an oversized book, measuring 8.5 inches by 10 inches, and includes 100 color photos, most of which show the nudibranchs at many times their actual size.
The book costs $24.95 plus $5.00 shipping and handling. Purchase can be made through www.jerryshine.com.
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WEBMASTER'S NOTES: After reviewing Nudibranchs of the Northeast, the first action item that came to mind was to relocate all my cold weather dive gear and buy a ticket for the East Coast! The photography is par excellence and there is narry a "tub shot" to be seen in the entire book! As an added bonus, the author took great pains to incorporate his diving knowledge/obervations into the narrative of each species! This is a super book for the naturalist and professional alike! How can you go wrong for $30???