6,000 miles. Seven months. Here's how an elephant seal finds its way back home every year. 🐘 engineering
How else would you navigate during a 6,000 mile journey?A map of the north Pacific Ocean showing dozens of journeys taken by female elephant seals.
“She was very good at returning to the beach, so we [were] OK putting expensive instruments on her,” Beltran explains.Beltran was part of a crew tasked with isolating Four Four Eight, sedating her, taking measurements, and mounting tracking devices on her body. “We can see in real-time at our computers, sitting at our desks in Santa Cruz, where the seals are, even if they're 4,000 kilometers offshore,” Beltran says.There’s also an instrument on the elephant seal's back that measures the depth and duration of her dives. That gives researchers insight into Four Four Eight’s diving patterns and her body condition.
A little more than a century ago, scientists thought elephant seals had gone extinct, hunted into oblivion by sealers in search of lamp oil. Females don’t eat or drink while on the beach, so after several weeks of nursing they grow “super skinny, [and] their pups are giant balloons,” Beltran says.
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