Excerpt from All About Sharks: A Complete Guide to the World’s Most Misunderstood Predator (Nov. 2017):
Whale sharks and tuna are known to work together to feed on schools of small fish like anchovies, sardines, and zooplankton.
One of the fastest fish in the ocean, tuna will circle the prey until the school of fish forms a ball, called a “bait ball.”
Whale sharks typically suspend themselves vertically beneath the ball, hovering in place while they feed on the fish.
Whale sharks are one of the only sharks able to voluntarily stand on their tail in this fashion.
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