National Geographic has released this soon-to-be classic photograph of one shark eating another shark whole.
The photo comes from Daniela Ceccarelli, of Australia's Research Council Center of Excellence for Coral Reef Studies. Ceccarelli was working with fellow researcher David Williamson on conducting a "fish census" off Great Keppel Island, part of the country's Great Barrier Reef. That's when Ceccarelli thought she spotted a brown-banded bamboo shark hanging out near the ocean's floor.