close-up of the colourful mantle of a giant clam in the coral reefs of watamu marine park, kenya

giant clam closeup mantle inside colorful colourful bivalve mollusk tridacna scuba diving safari tropical indian ocean underwater watamu marine park kenya east africa folds hermaphrodites mollusc wildlife environment sea vulnerable conservation brown colouration coloration algae filter feeder symbiosis mutualism symbiotic relationship portrait coral reefs reef derasa flanges smooth