Bycatch is the most critical extinction threat facing marine megafauna in coastal seas, including the world's most endangered dolphins, porpoises, seals, dugongs, sharks, and marine turtles. These vulnerable species share coastal waters with small-scale fisheries that employ 99% of the world's 50 million fishers. An estimate of global dolphin and porpoise bycatch indicates that more than 300,000 individuals are killed each year, with about 98% resulting from entanglement in gillnets and about 2% in trawlers and other gear, such as long lines.
A global review of marine mammal consumption by humans concluded that targeted hunts of small cetaceans have generally been reduced and capture
Bison or buffalo are large, even-toed ungulates in the genus Bison within the subfamily Bovinae
Two extant and four extinct species are recognized. Of the four extinct species, three were North American: Bison antiquus, B. latifrons, and B. occidentalis. The fourth, B. priscus, ranged across steppe environments from Western Europe, through Central Asia, East Asia including Japan,and onto North America.
The American bison and the European bison (wisent) are the largest terrestrial animals in North America and Europe. Bison are good swimmers and can cross rivers over half a mile (800 meters) wide. They are nomadic grazers and travel in herds. The bulls leave the herds of females at
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The giant clam is the largest immobile mollusc in the world, with the occasional giant clam individual reaching nearly 6ft in length. Once the giant clam has settled somewhere the giant clam remains there for the rest of its life.
Giant clams are founded anchored to the coral reefs in the warm, tropical waters of the Indian and South Pacific oceans, where giant clams spend the majority of their time feeding on the abundant variety of food that a coral reef has to offer.
Due to the large size of the giant clam, there have been reports of giant clams eating human beings. Despite this though, no reports of man-eating giant clams have ever been verified as it is thought that the gian
