有关海洋的英语散文

有关海洋的英语散文

【篇一：有关海洋的英语散文】

sea turtles (chelonioidea) are turtles found in all the worlds

oceans with the exception of the arctic ocean,and some

species travel between flatback turtle is found

solely on the northern coast of leatherback sea

turtle is the largest,measuring six or seven feet (2 m) in length

at maturity,and three to five feet (1 to 1.5 m) in width,weighing

up to 1300 pounds (600 kg).most other species are

smaller,being two to four feet in length (0.5 to 1 m) and

proportionally less are seven types of sea

turtles:kemps ridley,flatback,green,olive

ridley,leatherback,loggerhead,and hawksbill.

different species are distinguished by varying anatomical

aspects:for instance the prefrontal scales on the head,the

number of and shape of scutes on the carapace,and the type of

inframarginal scutes on the leatherback is the

only sea turtle that does not have a hard shell,instead carrying

a mosaic of bony plates beneath its leathery skin.

sea turtles have an extraordinary sense of time and

are highly sensitive to the earths magnetic field

and probably use it to live up to 189

fact that most species return to nest at the locations where

they were born seems to indicate an imprint of that locations

magnetic ridley turtles are especially peculiar

because instead of nesting inp>after about 30 years of

maturing,adult female sea turtles return to the land to

nest,usually on the same beach from which they

can take place every two to four years in make

from four to seven nests per nesting dig a hole

with their hind flippers and lay from 70 to 190 eggs in it

(depending on the species) before covering it up and returning

to the of the eggs are unfertilized dummy eggs

and the rest contain young tion takes about 2

the eggs hatch,these baby turtles dig their way

out and seek the a very small proportion of them

(at most 1 in 100) will be successful,as many predators are

waiting to eat them.