Apple has recently added a whole new load of screensavers for the Apple TV, which has been found by uharveydent89 on Reddit this week and they include new underwater scenes including jelly fish in Alaska, and Dolphins in Costa Rica as well as many more.

Apple TV screensavers automatically update so there is nothing to do to get the new ones, you can choose in settings however to let the Apple TV download new videos every day, every week or every month.

Source: Reddit (uharveydent89)