Among humpback whales and killer whales, jumping out of the water is often associated with important social events, such as the reunion of related groups after separation, mating rituals, separation of herds. In these cases, it is already an important social signal. It allows the animals to maintain communication over long distances, attract the attention of partners, etc.
During the breeding season, humpback whales also attract females using “songs” during the breaching period.
Sometimes briching is explained by the presence of waves or strong wind. By jumping out of the water, whales saturate the body with oxygen. It also allows them to better navigate in changing conditions.
Another function of briching is to get rid of shells and whale lice, which is how whales keep their skin clean.
Killer whales often bridle when hunting or learning to hunt, and in some cases they jump out of the water to stun their prey.
Source: Ferra
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