The Sei Whale is usually found in the Northern and Southern hemispheres.

yes the sei whale does live with a pack I just found out google

A Sei is a type of Whale, a fin is what fish have on their sides and top.

There is also a whale called the fin whale. It's also called the finback, razorback or rorqual. It is the second-largest of all whales. (The sei whale is the third-largest.)

Joseph Horwood has written:

'The sei whale' -- subject(s): Sei whale

'Biology and exploitation of the minke whale' -- subject(s): Minke whale, Minke whale hunting

YES