Seals use incredible navigation skills to return to site where they were born
The Antarctic fur seals’ remarkable homing instinct, which is thought to be the most accurate of any sea mammal, allows the creatures to return to within a single body length of the spot where they were born to give birth to their own pups.
http://www.telegraph.co.uk/earth/wildlife/8901321/Seals-use-incredible-navigation-skills-to-return-to-site-where-they-were-born.html