Pin-Point System

Starting the game, you'll be able to pick one of several points.
This will determine the dialect, markings, and other stats
that determine your susceptibility to cold or depth.

Each social group will have different benefits and
downfalls, starting with alternate skills.
Warm-water Orca would lose body heat more quickly,
Orca from arctic regions would prefer the cold, etc.

Each pin-point will mark large populations of Orca,
some who may be friendly or unfriendly toward
Orca from your specific starting region.

You could potentially grow your territories, pushing out
undesirable whales, fish and dolphin that eat your food sources.
Human anglers would keep track of your populations,
matching their numbers with yours if you hunt too much.

Migration would be necessary to continue the game,
keeping your pod fed as well as finding other Orca
to cooperate with.