Category: Fish
These mighty predators can be found in the coastal waters of all major oceans, open ocean, as well as on long oceanic migrations and trips into very deep water. Mature individuals can reach over 20 feet in length and weigh over 7000 pounds! Their lifespan is estimated to be around 70 years. One of the densest great white populations is around Dyer Island, South Africa, where most great white shark research is conducted. The great white is one of only a few species of shark that will raise its head above water level to look at objects such as prey.
Undersea Conversations…
While it isn’t obvious, fish have ears, and are able to communicate to one another through sounds. They don’t have vocal chords, but instead vibrate their swim bladders, producing popping, grunting, moaning, barking, or chirping noises. While some species of fish, like the goldfish, are silent listeners, there are over 1000 species that are known to vocalize, and some, like the gurnard who are veritable chatterboxes. While we can’t have a conversation with them - at least not yet - it is theorized that they do it to attract mates, frighten away predators or competitors, to synchronize mating, call for help and warn others, or to orient themselves.
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Discover Animals is a web-based educational resource offered by the NAIA
