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Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the Batoidea ( rays and kin).
6 days ago · shark, any of numerous species of cartilaginous fishes of predatory habit that constitute the order Selachii (class Chondrichthyes ). Sharks, together with rays and skates, make up the subclass Elasmobranchii of the Chondrichthyes.
Jul 17, 2018 · 1. Sharks do not have bones. Sharks use their gills to filter oxygen from the water. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissues— the clear gristly stuff that your ears and nose tip are made of. This category also includes rays, sawfish, and skates.
Jul 25, 2019 · Sharks can rouse fear and awe like no other creature in the sea. Find out about the world's biggest and fastest sharks, how sharks reproduce, and how some sp...
Dec 13, 2019 · Common Name: Sharks. Basic Animal Group: Fish. Size: 8 inches to 65 feet. Weight: Up to 11 tons. Lifespan: 20–150 years. Diet: Carnivore. Habitat: Marine, coastal and oceanic habitats worldwide. Conservation Status: 32% are Threatened, with 6% as Endangered and 26% as Vulnerable on a global basis; 24% are Near Threatened. Description.
Sharks are one of the oceans' top predators. They can differ in shapes and sizes, from the largest whale sharks to the smallest dwarf lantern sharks.
Shark Information, Anatomy, Habitat, Feeding, Reproduction and Types of Sharks. Facts about Great White Sharks, Tiger Sharks, Bull Sharks, Whale Sharks, Bull Shark, Hammerhead Shark, Mako Shark and more.
