Pregnant elephant seals have 'built-in GPS' that tells them when to head home to give birth - Daily Mail

Researchers used satellite tracking data to track more than 100 adult female elephant seals as they travelled across the across the Northeast Pacific Ocean.

Every year, pregnant female elephant seals carry out an ambitious 6,200-mile (10,000km), 240-day journey across the Northeast Pacific Ocean in search of food. Despite this, the females always seem t… [+3527 chars]

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