shark

rough skin (like that of a shark)

rough skin (like that of a shark)

shagreen (from a shark or stingray), sharkskin, shark leather

sharkskin scabbard

sturgeon (esp. the green sturgeon, Acipenser medirostris)

ferocious shark

saw shark (esp. the Japanese saw shark, Pristiophorus japonicus)

shortfin mako shark (Isurus oxyrinchus)

dogfish (any shark of family Squalidae)

tiger shark (Galeocerdo cuvier)

any shark of genus Centrophorus (esp. the dwarf gulper shark, Centrophorus atromarginatus)

spiny dogfish (Squalus acanthias)

basking shark (Cetorhinus maximus)

Japanese angel shark (Squatina japonica)

silver chimaera (Chimaera phantasma)

bullhead shark (esp. the Japanese bullhead shark, Heterodontus japonicus)

salmon shark (Lamna ditropis)

starspotted smooth-hound (species of hound shark, Mustelus manazo)

Asian stubtail (Urosphena squameiceps)

brownbanded bambooshark (Chiloscyllium punctatum)

spotless smooth-hound (Mustelus griseus)

spinner shark (Carcharhinus brevipinna), long-nose grey shark

spinner shark (Carcharhinus brevipinna), long-nose grey shark

basking shark

oceanic whitetip shark (Carcharhinus longimanus)

bull shark (Carcharhinus leucas)

kitefin shark (Dalatias licha), seal shark

remora (any fish of family Echeneidae), suckerfish, sharksucker...

blue shark (Prionace glauca)