The first game is Blue Whale on the National Geographic website. The idea is to find and tag blue whales so that they can be studied by scientists. Warning, it is really hard to tag the whales!
The second game is Move which is also on the National Geographic website. Here you lead a migrating herd of animals and try to keep them alive. You have to contend with predators as well as lack of food.
The third game is from the Discovery Channel, Thrill of the Catch. This is a fishing simulation that also allows you to create and name your own fish. As you catch more fish, you are rewarded with better boats.