Two incredible encounters with great white sharks have been caught on camera off the coast of Hawaii this week.

Photographers Mark Mohler and Kimberly Jeffries saw one of the sharks, known as "Deep Blue", feeding on the carcass of a sperm whale on January 13.

The shark, which is about six metres long, was last seen off the coast of Mexico in 2013.

Research biologist Nicole Nasby-Lucas, from the Marine Conservation Science Institute in California, confirmed the shark’s identity.