Some people in Hollywood woke up Thursday and were surprised to see this 10-foot mako shark swimming in the lake. People nearby said the shark appeared sluggish and struggled in the brackish water.

If you thought it was completely safe to swim in English seas, you may be wrong, and could encounter a seriously ‘dangerous' shark.

A 10-to-12-foot mako shark, one of the fastest fish in the world, was spotted in North Lake in Hollywood, surprising residents and raising concerns about its health.

Officials said the 12-foot mako shark was found in Hollywood's North ... especially in areas known for wildlife activity. Avoid swimming at dawn, dusk or nighttime, when visibility is lower.

A 10-to-12-foot mako shark, one of the fastest fish in the world ... “He’s just been swimming in circles,” Nevins said. “He gets stuck under the docks.” Hollywood police and marine ...

That means that if we can prevent further erosion of this genetic diversity in shortfin mako sharks by urgently curbing overfishing, we have more hope for this species to retain the resilience ...