The following pictures where taken at the Whale Museum in Friday Harbor. This is a skull of an orca, this particular one was between 3 and 4 feet long. You can see how big it's teeth are.
This is full shot of the same orca from above and it was a little bigger than 20 feet long.
This is a skeleton of a gray whale which was about as big as the orca next to it. These pictures don't really show how big they actually are.
Look in the bottom right corner of this picture there is the rarely seen M outside her natural habitat. Totally oblivious to the flying orca above her.
Here are the skeletons of a Human and a Dolphin. What's cool is when you get down to it there's not much difference between us and them.