A small Chilean fishing boat had a very close encounter with a pod of curious sperm whales.

The vessel was reportedly off the coast of Lebu, central Chile, when the whales approached the boat and began swimming directly at it.

The boat appears to be relatively small and yet, despite the vessel thrashing around on the Pacific Ocean, the fishermen were quick to grab their phones and film the ginormous creatures.

One whale appears to knock into the boat while another swims underneath.

Mature male sperm whales average 16 meters (52 feet) in length while some may reach as long as 20.5 meters (67 feet) and are the largest of the toothed whales.

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