Sharks are a type of fish with cartilaginous skeletons and streamlined bodies that breathe using five to seven gill slits. They have dermal denticles covering their skin for protection and improved hydrodynamics. Sharks range greatly in size, from the dwarf lanternshark of only 17 cm to the whale shark which can grow to 12 meters and feeds by filter feeding plankton and small fish.

1. Sharks Hunter Mcbride

3. Sharks (superorderSelachimorpha) are a type of fish with a full cartilaginousskeleton and a highly streamlined body. They respire with the use of five to seven gill slits. Sharks have a covering of dermal denticles that protect their skin from damage and parasites and improve fluid dynamics. They have several sets of replaceable teeth.[1] Sharks range in size from the small dwarf lanternshark, Etmopterusperryi, a deep sea species of only 17 centimetres (7 in) in length, to the whale shark, Rhincodontypus, the largest fish, which grows to a length of approximately 12 metres (39 ft) and which feeds only on plankton, squid, and small fish through filter feeding.

5. sharks

6. http://www.theunderwaterchannel.tv/clipinfo/3014456?gclid=CNOV5ILNw5sCFSBN5QodcyvZ_w