Blue shark (Prionace glauca) and Pilot fish (Naucrates ductor), Pico Island, Azores, Portugal, Atlantic Ocean

prionace glauca naucrates ductor prionace naucrates carcharhinidae carcharhiniformes euselachii elasmobranchii chondrichthyes pisces vertebrata chordata deuterostomia coelomata bilateria metazoa opisthokonta eukaryota carangidae perciformes teleostei actinopterygii osteichthya prionace glauca naucrates ductor saltwater fish summer adult alone swim high angle view overview underwater shot blue temperate sea azores archipelago blue shark (prionace glauca) prionace pelagic fish top view near threatened species (iucn) nt august macaronesia naucrates pilotfish (naucrates ductor) nobody several species saltwater fishes sea fish sea fishes salt water fish salt water fishes adults single lonely only solo one lone swimming (action) swimming high angle shot overhead shots overhead shot overhead sight overhead sights overhead view overhead views overviews global sight global sights full length subaquatic photos subaquatic sights seen under the water photos under the water underwater shots subaquatic image underwater view submarine images submarine sights submarine sight submarine photos submarine photo underwater views submarine photographies submarine photography underwater underwaterphoto underwaterpicture underwaterphotography underwaterphotographies underwaterphotos underwaterpictures temperate seas temperate ocean temperate oceans azores azores (region) blue sharks (prionace glauca) pelagic fishes top views top sight top sights view from above top shot with nobody different species fishes particularity species particularity species temperate season seasons atmosphere stage of development individual enumeration locomotion motion shot colour sea marine area area portugal european union europe shark elasmobranchii chondrichthyes fish (animal) wild animal carcharhinidae carcharhiniformes euselachii elasmobranchii chondrichthyes pisces vertebrata chordata deuterostomia coelomata bilateria metazoa opisthokonta eukaryota low risk (iucn) lr iucn red list of threatened species north atlantic ocean atlantic ocean world sea and ocean carangidae perciformes teleostei actinopterygii osteichthya actinopterygii osteichthyes