Within the class of fish, the whale shark is further classified as follows:
- Class: Chondrichthyes (cartilaginous fish)
- Subclass: Elasmobranchii (sharks and rays)
- Order: Orectolobiformes (carpet sharks, whale sharks, and wobbegongs)
- Family: Rhincodontidae (whale shark family)
- Genus: Rhincodon
- Species: Rhincodon typus
The whale shark is the only species in the Rhincodontidae family and the largest known living fish species, reaching lengths of up to 18 meters (59 feet) and weighing an estimated 12 tons. It is characterized by its gentle filter-feeding behavior, feeding primarily on plankton, small fish, and crustaceans.