Whale be used as another indication of animal intelligence. Sperm whales have the largest brain mass of any animal on earth, averaging and in mature males, in comparison to the average human brain which averages in mature males. The brain to body mass ratio in some odontocetes, such as belugas and narwhals, is second only to humans. Small whales are known to engage in complex play behaviour, which includes such things as producing stable underwater toroidal air-core vortex rings or "bubble rings". There are two main methods of bubble ring production: rapid puffing of a burst of air into the water
Whale Rider because "she has done enough damage" with her presumption. Also, the largest whale traditionally belongs to the legendary Paikea. When Koro walks away, Pai climbs onto the back of the largest whale at the location and coaxes it to re-enter the ocean. The whale leads the entire pod back into the sea; Pai submerges completely underwater, and the spectators wonder if she has drowned, but are relieved when she comes back above sea level. When she goes out to sea, Nanny shows Koro the whale tooth which Pai had previously recovered. When Pai is found and brought to the hospital,