Animals communicate in their own special way when interacting with humans. Most pet owners thus
usually understand what their animals are trying to say by certain signals which they send out. Such
signals include a cat's purring and rubbing against a person's legs, or the excited wagging of a dog's
The same holds true for sharks who also send out specific signals when they come into contact with
people. Unfortunately, up until now we have not been able to interpret them properly except in
extremely rare cases. It is thus not surprising that until a short time ago divers who encountered
sharks were advised to simply react passively until the animal lost interest in them.