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Published on Jan 28, 2012
These small sea slugs float on the sea and are blown onto shore during the summer months onto Central Coast beaches. These were collected at MacMasters Beach in New South Wales. The Blue Sea Slug feeds almost exclusively on the tentacles of the stinging bluebottles. The larger ones are Glaucus atlanticus, with a single row of pinnae, while the smaller one has multiple rows of pinnae, hence is Glaucus marginatus.