🐟Salmon Jumps. 

How Do Salmon Jump so High?
Salmo salar - salire means ‘to jump’ in Latin. The secret to their dramatic leaps lies in the standing wave at the base of each waterfall, which helps lift the salmon into the air, enabling them to save precious energy.
Conserving resources is vital, because adult salmon do not feed in fresh water, and some individuals may linger in a river for up to 14 months before heading to the shallow, gravelly upper reaches where they spawn. During that time, they spend long periods quiescent in deep pools and under banks. They only travel upriver in response to increases in flow, especially in autumn at the ‘tail’ of a spate, just after the peak flow has passed.
Source:
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