Would love to settle a debate. Click on this. Looks like bones to me. There's a skull, backbone, rib cage, and a bunch of bones that look like arm and hand bones. Normally they are inside the body.
Balleen whales have huge skulls with huge jaw bones.
The right whale has the longest baleen by far. The skull pictured below is that of a sperm whale. Truly an animal with a big head. Note the teeth are only on the bottom jaw. Other toothed whales, like dolphins and killer whales, have teeth on the top and bottom.