Whale sharks eat plankton because they are adapted to filter-feeding, consuming vast quantities of tiny organisms from the water.
Reasons Behind This Diet
- Mouth and gill structure: Enormous mouths and comb-like gill rakers strain plankton as the shark swims with its mouth open.
- Plankton abundance: Copepods, krill, and algae are plentiful in the waters whale sharks inhabit.
- Low energy requirements: Plankton is energy-efficient to consume, allowing whale sharks to grow to enormous sizes.
- Migration: They travel to areas where plankton blooms occur.
In short, whale sharks are built for filter-feeding, and their physiology and behavior have evolved to exploit this abundant food source.