What types of groups do orcas live in?
The Orcas live in groups called pods, comprising of 5 to 30 members.
Some times several smaller pods may join occasionally to form bigger groups called herds, aggregations, or Superpods.
The Orcas in a pod seem to establish strong social obligations. Their is a social hierarchy within a group of orcas. The females dominate this social hierarchy.
There are other marine mammals such as Minke whales and seals, that have been observed swimming with orcas, but they may be prey for them from one time to another, especially for the transistors group.