Monday, July 23, 2018

Whale Sharks Can Grow Up To 60 Feet Long And Live To 130 Years, Scientists Find

Whale sharks, the largest of the shark species, can live up to 130 years and grow longer than scientists once thought, a recent study found.

Scientists at and collaborators from the Maldives Whale Shark Research Program published a on the world’s largest shark species after finding that male can swim in the ocean for up to 130 years.

The large sharks are plankton-eaters and can weigh up to 20 tons, though generally harmless to humans many have spotted them off the coasts of South Florida according to Bakersfield.

Cameron Perry, the first author of the scientific paper, said research was conducted using a unique approach.

“Up to now, aging and growing research has required obtaining vertebrae from dead whale sharks and counting growth rings,” Perry said the rings are similar to that of tree rings. “Our work shows we can obtain age and growth information without relying on dead sharks. That is a big deal.”

The study was published after following free-swimming sharks who returned to the same area every one to two years n the South Ari Atoll, Maldives over a series of ten years. The returning sharks were recognized due to their uniquely patterned spots, or polka dots, all over their large bodies.

According to researchers the sharks are “longer and bigger than previously believed,” averaging 61.7 feet, nearly 17 feet longer than an average school bus. These measurements were based on 186 encounters with whale sharks who were measured visually as well as with laser and tape.

The research of such a large, poorly understood and endangered species is crucial according to Mahmood Shivji Ph.D who is the director of NSU’s GHRI.

Researching the large animals and learning their growth dynamics, traveling patterns and preferred nurseries can help conservationists better understand how to preserve the lives of such a majestic animal, according to Perry.

Although the exact number of whale sharks left on this planet is not specified, their conservation is extremely important according to scientists. Being placed on the endangered species list once again in 2016, the warm-water species many conservation efforts are made throughout the world to save the largest fish in the sea.

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