Rubbing is obviously a pleasurable social activity. Orcas can hunt co-operatively, top the marine food chain and have no predators. Adaptations Orca bodies are modified to cope with life as a sea predator. Behaviour Sound travels well in water and orcas communicate with calls, clicks and whistles. They use 'echo-location' clicks to navigate and find food.
Orcas can leap out of the water to 'breach'.
Orcas also 'spy-hop', rising vertically in the water with their heads in the air, looking around. Society Permanent mother-led family groups form extended families called 'pods'. Though mothers are the primary care-givers, everyone plays a part in caring for the young. The social life is vital. Each pod has its own distinct dialect.