By-the-wind sailor (Velella velella), floating on the surface of the sea outside Newport Beach, California, United States of America, North America

by the wind sailor velella velella floating surface sea outside newport beach california united states america north america jellyfish ocean water blue calm surface ripples reflection sunlight creature tentacles sting dangerous marine life sea wildlife nature animal aquatic invertebrate cnidaria siphonophora nematocyst venom bioluminescence plankton oceanography marine biology coastal beach shore coast tide wave current drift swim float marine environment ecosystem