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.
【 the shark's English name 】 shark (s) sharks, in ancient times, Jiao sharks, called Jiao ShaYu, is the behemoth of the ocean, so called "the sea Wolf". The shark's nose is located in the front of the mouth of the oval extends the head, some have mouth nose channel, connection between rule in the mouth, sniffing the drape of capsule increase the contact area with the environment. Shark cartilage belongs to fish, don't have YuBiao, adjust the ups and downs of a liver, mainly by it. According to the investigation and scientists calculated that fossil, sharks on the earth life around 180 million, it as early as 300 million years ago was already there, so far appearance does not change much, explain its survival skills, said Marine "hunter". The shark's classification 】 notochord animal door, vertebrates and door, Pisces, RuanGuYu the outline, board gills spathula and overall side holes according to the 1971 Russ classification system is divided into six down frilled shark mesh, rat shark eye, tiger shark mesh, really shark mesh, Angle shark eye, saw shark mesh, flat shark mesh, must be sharks mesh. Sharks, considered by some to be the most fierce animals in the ocean. Whale sharks with small sea creatures for food, and whales almost. As the food with a certain similarity, over a long period of biological evolution, they grow and whales have similar point, this is called "convergent evolution". So "whale shark" name is taken for granted. Of course, whale sharks are the largest of the existing sharks, also is the largest known fish.