About Elysia chlorotica

Found in saltwater marshes along the east coast of the US as far north as Nova Scotia to NC in the south and some times down to FL; waters of widely varying salinity, but usually brackish salt marshes.  Our specimens are routinely collected from an intertidal marsh on Martha’s Vineyard Island, MA.
Synonyms = “leaves that crawl,” “solar-powered sea slugs,” “walking leaf,” “eastern emerald elysia,”
Reproduction = hermaphroditic, but self-fertilization is not common, shed fertilized eggs
Size = 2 to 3 cm common; some up to 6cm