, I love dolphins. A group of dolphins are called pods. These pods are for social interaction which they need as depending on the species of the dolphin can be very intelligent. There is very few wild dolphins that aren't in pods as they are social creatures like us.
bullpen - a place on a baseball field where relief pitchers can warm up during a game. area - a part of a structure having some specific characteristic or function; the spacious cooking area provided plenty of room for servants.
It was all a cheap publicity stunt. One of the regulation features of early ballparks, supposedly, was a gigantic billboard advertising Bull Durham tobacco, inevitably located out in left field, near the pitchers' warm-up area. Hence the bullpen was the pen near the Bull. (Which, frankly, sounds like a lot of bull to me.)