Mediterranean Moray an Dusky Grouper, Muraena helena, Epinephelus marginatus, Les Ferranelles, Medes Islands, Costa Brava, Mediterranean Sea, Spain

grouper groupers epinephelinae serranidae predator fish fishes reef fish epinephelus guaza moray morays muray murays fish fishes predator nocturnal eel eels muraenidae osteichthyes gnathosomata elopomorpha costa brava catalonia europe nature l'estartit lestartit estartit nature sea ocean sealife marine wildlife marine fauna underwater underwaterphoto underwaterpicture underwaterphotography underwaterworld mediterranean moray an dusky grouper muraena helena epinephelus marginatus les ferranelles medes islands costa brava mediterranean sea spain percifoes anguillifoes horizontal foat