anemone at the bottom of the sea

acoustic adaptation adapted alive anemone animal aquatic biodiversity bubbles cnidaria cnidocytes colonies colorful communication coral ecology endangered eukaryotic evolution exoskeleton filter filtering finned fins fish fisheating gill gillbearing invertebrate living marine medusa movement multicellular ocean oceans photosynthesis piscivora plankton polyp polyps predatory red reef salt saltwater scales sea sessile spines squamate sting swim tail tentacles urticina velvety vertebrate water