For the past five years, For The Fishes, which works to restore and protect fish populations and coral reef habitats, has pushed for shark protections along with other organizations that include ...

Scientists believe their teeth—which are not used in feeding ... as large as a full-grown whitetip reef shark. During the 20th century, basking sharks were widely fished for their liver ...

That is why shark teeth are the most abundant vertebrate fossil material on the Earth and in the sea. Scalloped hammerhead on the reef. NOVA: Do sharks have to keep swimming to breathe?

Fossil hunters discovered the tooth “eroding ... especially reef-dwellers, became extinct, and many land plants were severely affected.” Squalicorax shark fossils have been found in Europe ...