Tonic Immobility in Sharks

What is tonic immobility Tonic immobility, also known as (TI) is an unlearned reflex action that leads to a state of paralysis that some animals can enter into involuntarily when they feel threatened and is characterised by a state of immobility. This behaviour has been reported to occur in a variety of animals including insects, reptiles, birds, amphibians, mammals and fish. How TI affects sharks Although this phenomenon does not occur…

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