This really big whale

The Fishwives met this really big whale while traversing the seas near Lome. It was really big.

The really big whale was capable of speech and magic.

Later, the Fishwives encountered a whaling ship near Port Skaug which was pursuing the really big whale. They sent it in the opposite direction of the really big whale.

Some dolphins also mentioned that really big whales were diving unusually deep and working some strange magic, but that's probably nothing.

The really big whale's name may have been Kraken-Bane.