Shark or Dolphin ?

@gurjit_d (789)
United States
December 3, 2006 9:34pm CST
Shark or Dolphin ?
6 responses
• India
4 Dec 06
dolphins.. they are so cute and friendly
@gurjit_d (789)
• United States
5 Dec 06
thanks
@harish4u (1393)
• India
4 Dec 06
i prefer dolphin because it is man's best friend....and a lovable animal...it is good to pamper it and the animal just plays with us a lot....children also loves dolphins only but not sharks...i have seen white dolphins in usa where they are breeded in a aquarium like structure and are used for entertainment purposes...i loved the show a lot and it was a great to see soo many sea animals at a common place...my parents also loved it a lot
@gurjit_d (789)
• United States
4 Dec 06
thanks
@bapi_da (760)
• India
4 Dec 06
Shark - The skeleton of the shark is very different from that of bony fishes such as cod; it is made from cartilage, which is very light and flexible, although the cartilage in older sharks can sometimes be partly calcified, making it harder and more bone-like. The shark's jaw is variable and is thought to have evolved from the first gill arch. It is not attached to the cranium and has extra mineral deposits to give it greater strength.
Sharks (superorder Selachimorpha) are fish with a full cartilaginous skeleton and a streamlined body. They respire with the use of five to seven gill slits. Sharks have a covering of dermal denticles to protect their skin from damage and parasites and to improve fluid dynamics. They have replaceable teeth. They are some of the world's most misunderstood predators, as they very rarely attack humans unless intimidated. Sharks include species from the hand-sized pygmy shark, Euprotomicrus bispinatus, a deep sea species of only 22 cm in length, to the whale shark, Rhincodon typus, the largest fish, which grows to a length of approximately 12 metres (41 feet) and which, like the great whales, feeds only on plankton through filter feeding. The bull shark, Carcharhinus leucas, is the best known of several species to swim in both salt and fresh water (it is found in Lake Nicaragua, in Central America) and in deltas.
@gurjit_d (789)
• United States
4 Dec 06
thanks
@Jshean20 (14348)
• Canada
4 Dec 06
Which would I prefer to come into contact with? A dolphin! I wouldn't be scared of swimming with a dolphin but I would definatly fear being anywhere near a shark! Even if I was in a cage, I couldn't do it.
@madhavi123 (2550)
• United States
4 Dec 06
I like dolphins
• India
4 Dec 06
i like shark
@gurjit_d (789)
• United States
4 Dec 06
thanks