Absolutely fascinating reading!
http://news.bbc.co.uk/1/hi/sci/tech/4736196.stm
I'm astounded at what these creatures can do..
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Their tracked journeys have thrown new light on their wandering, where they go to feed and, amazingly, how they appear to use the frontal systems to navigate and find resources.
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Quote:
Adults will spend perhaps less than 10% of their time at the surface, preferring instead to swim below water for 30 minutes to an hour.
 "They must have some way to reduce their metabolic rate when they are diving, shutting down most of their systems and resting as they go," said Biuw.
"So, they would go to sleep in transit and then they wake up down at 1,500m and hope there is squid there for them to eat."
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What tremendous abilities they seem to have.
