An adult bull among a pod of about 20 killer whales (Orcinus orca) in Antarctic Sound near the Antarctic Peninsula, Polar Regions

Gathering of at least two resident pods of killer whales (Orcinus orca) encountered near sunset, Johnstone Strait, British Columbia, Canada

Gathering of at least two resident pods of killer whales (Orcinus orca) encountered near sunset, Johnstone Strait, British Columbia, Canada

A juvenile killer whale (Orcinus orca) encountered off West Craycroft Island in Blackfish Sound, British Columbia, Canada

Gathering of at least two resident pods of killer whales (Orcinus orca) encountered near sunset, Johnstone Strait, British Columbia, Canada

A small pod of killer whales (Orcinus orca) off Ascension Island in the Tropical Atlantic Ocean, South Atlantic Ocean

orca/ killer whale (Orcinus orca) 'Luna' (L98), 5-year old lone male interacting with Ed Thornburn in Nootka Sound, West Vancouver Island, Canada, North Pacific.

orca/ killer whale (Orcinus orca) 'Luna' (L98), 5-year old lone male interacting with people's feet in Nootka Sound, West Vancouver Island, Canada, North Pacific.

Orca (Orcinus orca) and diver. Akaroa, New Zealand.

orca/ killer whale (Orcinus orca) 'Luna' (L98), interacting with Fisheries boat, 5-year old lone male in Nootka Sound, West Vancouver Island, Canada, North Pacific.