The tsunami was just the beginning of the terror

Malibu Shark Attack (2009)

Directed by David Lister

An underwater earthquake generates a tsunami that strikes Malibu, bringing a hunting pack of prehistoric-looking goblin sharks to the surface. Although the beach is evacuated before the big wave strikes, a group of lifeguards and a crew of construction workers are stranded in the high water and have to fight the sharks to get to dry land.