Toothed whale brain size with the expected brain size based on such allometric analysis provides an encephalisation quotient that can 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. Dolphins are known to engage in complex play behaviour, which includes such things as producing stable underwater toroidal air-core vortex rings or "bubble rings". Two main
The Whale Caller into a more civilized living style. The whales migrated over a month ago and Saluni feels like her life is fulfilled as she has the Whale Caller and the Bored Twins. She even tries to initiate sex with him but his mind becomes filled with images of whales, including Sharisha and he is unable to follow through. The Whale Caller brings Saluni to Mr. Yodd and one day Saluni even goes there by herself in order to better understand the Whale Caller. One day they meet Lunga Tubu who has the voice of the Earth. One day, during a thunderstorm,