Numerous biologists (malacologists) and citizen scientists, including many scuba divers, study the marine mollusks known as opisthobranchs, which are a large and diverse group of shelled and (mostly) shell-less, saltwater gastropods, the common name for which is sea slugs (including nudibranchs, sacoglossans, etc) and bubble snails. Symposia and workshops on opisthobranchs are meetings where those who specialize in studying these animals meet in order to share ideas, information, and knowledge.
