Calf: A calf is a young whale or dolphin.
Bull: A bull is a male whale or dolphin.
Cow: A cow is a female whale or dolphin.
Breach: When a whale or dolphin is  jumping.
Blowhole: A blowhole is a hole that accutlly is the whale or dolphins nose!
Dorsal fin: The dorsal fin is the fin on a whale or dolphin's back.
Pod: A pod is a herd of whales and dolphins swimming in numbers up to 50 to 1000!
Blubber: Blubber is the layer of fat that whales and dolphins use to keep them warm in the icey waters.
Tail flukes: The tail flukes of an whale or dolphin is the hind tail.