The dolphins or false killer whales were found on an isolated beach in northwest Tasmania. About 136 are alive, but authorities say it will be a challenge to refloat them.

Only 90 of the 157 stranded marine animals appear to still be alive as rescue teams race against the clock to save them.

Tasmania, Australia:: Dozens of endangered false killer whales wash up on a Tasmania beachEyewitness video at the scene showed dozens of the endangered dolphins, which can grow up to 20 feet (6.1 m) long and weigh up to 3,