Mapping uncharted undersea volcanoes, and elephant seals dive deep to sleep
Science Magazine Podcast
Elephant Seal Sleep Monitoring
The animals that we equipped with sleep monitors were juvenile animals with a slightly lower dive capacity. So their average sleep duration was somewhere around five minutes at a time. And those dives were about 15 to 20 minutes long, I think as long as 25 minutes. When we use that data to try to find naps in other data sets with just time and depth, those animals are adults with larger dive capacities and they were able to sleep for a grand total of 10 minutes per dive. We had a subset of data that had both time depth records and stroking information. So it's reasonable to call this five minute period where they're not moving at all sleep. Then the larger data set is as
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