cotton-spinner is a species of sea cucumber in the family holothuriidae - holothuria forskali

snorkel wild nature inverts creature living life scenery underwater scene seawater undersea adriatic adria aegean biology color sand eater echinoderm tropical invertebrate saltwater holothuria cucumber exoticism seafood seabottom rock pools aquatic mollusk flora animals marine fauna black sea cottonspinner mediterranean cowrie cowry beach snorkeling closeup biodiversity scuba diving forskali species family holothuriidae found shallow depths eastern atlantic ocean