According to the Wildlife Conservation Society, Ocean giants like whales, sea turtles, sharks, and dolphins are an increasingly rare sight in the world’s great seascapes.
Commercial hunting, pollution, habitat destruction, and entanglement in fishing gear have decimated their numbers. Despite the grave threats, these creatures are also remarkably resilient creatures. They undertake vast migrations that span huge swaths of the globe, following the same complex route year after year. Wildlife Conservation Society works from the nesting beaches of Sulawesi’s sea turtles to the breeding grounds of Madagascar’s humpback whales to guard that route—and the future of the world’s ocean giants—through cooperative management, training, and education.
Source:LiveScience
Source: http://www.livescience.com/49427-new-size-estimates-for-large-ocean-animals-infographic.html