The shark's English name 】 shark (s)Sharks, in ancient Jiao, Jiao sharks, called the behemoth of ShaYu, is the ocean, so called "the sea Wolf". The shark's nostrils located at head ahead, some of the oval extends mouth with mouth nose channel, connection between the nose mouth, sniffing sac 6.1% of drape increased the contact area with the environment. Shark cartilage fish, body belongs to no YuBiao, regulate the ups and downs of mainly by its big liver. According to investigation and scientists calculated that fossilized shark in the earth, about 1.8 billion years, life in 3 million years earlier it had existed before, now appearance does not change much, explain its survival skills, said Marine "hunter".【 the shark's classification 】Subphylum door, vertebrates to ascomycotina, fish the outline, RuanGuYu the outline, plate, lateral holes sarcopterygii gills compilationAccording to 1971, Russ classification system down intoSix gills shark mesh, rat shark mesh, tiger shark mesh, really shark mesh, Angle shark mesh, saw shark mesh, flat shark mesh, must shark mesh.Shark, considered by some to be the most fierce animals in the ocean. Whale sharks with small sea creatures, and almost as food whales. As the food has some similarities, over a long period of biological evolution, they grow and whales are similar points, this is called "convergent evolution". So "whale shark" name is taken for granted. Of course, whale sharks are existing in the largest shark, is also the largest known fish.
漩海灵猫
