Scalloped hammerhead shark swimming among other fish over the seabed, Galapagos Islands

animal behaviour swimming submerged shoal nobody full length horizontal colour image photography point of view side view animal fish cartilaginous fish shark saltwater fish tropical fish ocean floor reef rock flowing water ocean underwater nature nature reserve wildlife reserve marine life wildlife hammerhead shark countershading chondrichthyes elasmobranchii carcharhiniformes sphyrnidae lewini galapagos islands ecuador pacific ocean saltwater national park biological marine reserve unesco world heritage site volcanic rubble wolf island underwater photography