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درباره این کتاب:
Sharks are in
trouble.
Fifty shark
species are at high risk of extinction,
and another sixty-three are threatened.
These intelligent, mysterious—and
sometimes scary—fish evolved about 420
million years ago. They have adapted to
survive deep in the ocean and in
shallow-water habitats. Commercial fishing
and finning are threatening shark
populations. So is water pollution. Marine
biologists and others, including young
people, are working together to save these
fascinating predators.
Discover the
work of scientists and conservationists as
they study shark biology and morphology;
research migration, feeding, and mating
patterns; delve into human, climate, and
other threats to shark habitat; and
develop sophisticated technologies to aid
sharks and shark research.
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میخوانیم:
فهرست مطالب،
در تصاویر بالا
◄ مطالعه
این کتاب برای کلیه علاقمندان کوسه ها و
زیستشناسی دریا، برای نوشتن مقاله و تحقیق
و ... کاربرد دارد.
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