A seal with a tracker adhered to its fur sitting in some grass with a rainbow behind it.
In an email to Insider, scientist Clive McMahon called the seals they adhered trackers to heroes.
  • Scientists put trackers on Antarctic seals to help them map the ocean floor.
  • The deep-diving seals revealed a massive underwater canyon over a mile deep.
  • This canyon may help scientists predict how the Antarctic ice sheet will react to climate change.

Seals wear many hats — ambassadors for the Antarctic, friends to whales, and award-winning models. Their new hat has a scientific purpose, helping researchers discover the unseen parts of the ocean floor.