Whales are sea living mammals. They therefore breathe air but cannot survive on land. Some species are very large indeed and the blue whale, which can exceed 30M in length, is the largest animal to have lived on earth. Superficially, the whale looks rather like a fish, but there are important differences in it's external structure, its tail consists of a pair of broad, flat horizontal paddles (The tail of a fish is vertical0 and it has a single nostril o top of it's large, broad head. The skin is smooth and shiny and beneath it lies a layer of fat (blubber). This is up to 30M in thickness and serves to conserve heat and body fluids.
Senin, 21 Juli 2008
WHALE IS MAMMALS
Whales are sea living mammals. They therefore breathe air but cannot survive on land. Some species are very large indeed and the blue whale, which can exceed 30M in length, is the largest animal to have lived on earth. Superficially, the whale looks rather like a fish, but there are important differences in it's external structure, its tail consists of a pair of broad, flat horizontal paddles (The tail of a fish is vertical0 and it has a single nostril o top of it's large, broad head. The skin is smooth and shiny and beneath it lies a layer of fat (blubber). This is up to 30M in thickness and serves to conserve heat and body fluids.
Langganan:
Posting Komentar (Atom)
Tidak ada komentar:
Posting Komentar