A big difference between the two groups is how they gather their food. Baleen whales strain small animals out of the ocean for their food, they will catch and eat a lot of small animals at one time. They do not have to spend a lot of time swimming to feed themselves. Odontoceti whales, on the other hand, have to chase their prey, and they eat bigger animals one at a time. Toothed whales normally are excellent hunters, and they will even work together to round up their prey.
Toothed whales are usually darker on the top, and lighter underneath.
This makes the whale harder to see in the water, which helps them sneak up on, and catch their prey. When you look at the whale underneath its lighter coloring tends to blend with the sunlight shining on the water s surface. If you have ever tried to open your eyes in the ocean, you know that it is really hard to see anything close up, let alone far away. Even if the water is very clear you still can t see very far, and the deeper you go under water, the darker it gets because there is less light getting through. Some whales use sound to help them navigate under water.