Actually, Manta, Journey To Atlantis and Kraken do have animal viewing opportunities that your don't have to ride the rides for. Journey To Atlantis has a small aquarium with fish and jellyfish. The aquarium is located next to the gift shop. Kraken has a few eels in a small area outside the queue line. And Manta has a large aquarium full of manta rays, fish and other sea creatures. The aquarium is located near the queue line as well.
At Antarctica, you don't necessarily have to ride the ride to see the Penguins, but you do have to wait in the ride queue line. When you get to the ride entrance, let them know you don't want to ride the ride just see the penguins and they should lead you to the non rider area.