Whale Shark Cameras Reveal Never-Before-Seen Foraging Behaviors

Researchers from Murdoch University's Australian Institute of Marine Science attached cameras to whale sharks, the world's largest known fish, to observe their behavior in the wild. The footage, published in Marine Biology, captured never-before-seen foraging behaviors, including feeding at the bottom of the sea. The team defined 36 distinct whale shark behaviors, with six low-effort feeding tactics being most common, suggesting the sharks often snack in low-prey-density water until they find a krill swarm. The study also revealed that whale sharks have a wider variety of foraging strategies compared to other filter-feeding megafauna, which may explain their ability to thrive in tropical waters with limited prey. The research was led by Christine Barry and Luciana C. Ferreira, who described the sharks as 'one of the most charismatic marine species.' The team used combination tags with cameras to capture the sharks' point of view, providing insights into their secret lives. The study is part of a larger effort to understand and conserve these endangered animals.