With occasional sightings of common dolphin and minke whale. Dolphins and porpoises are hunted in an activity known as dolphin drive hunting. The southern right whale dolphin and the hourglass dolphin live only in the Southern Ocean. Swimming and interacting with the dolphins along with dolphin shows are available here. Hunting was replaced by whale and dolphin tourism. There he worked with dolphins exploring dolphin intelligence and human-dolphin communication. One individual was observed playing with a bottlenose dolphin in Hawaiian waters. Mating behavior of bottlenose dolphin is polygamous. The common bottlenose dolphin has a bigger brain than humans. Such behaviour matches that of many smaller dolphin species, such as the bottlenose dolphin. They display aggression towards sharks and smaller dolphin species. Killer whales are the largest extant members of the dolphin family. It is not to be confused with the Chinese white dolphin or the finless porpoise. The neocortical neuron number of the bottlenose dolphin is unknown. Marine mammals include the bottlenosed dolphin and grey seal.