How many hearts does an octopus have?
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
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- What eats giant squid?
“Sperm whales eat giant squid and often have sucker scars from fighting them.”
Reference: Smithsonian Ocean
More from this shelf
When was a giant squid first filmed?
A live giant squid was photographed in the wild for the first time in 2004 and filmed in 2012.
Military sonar technology causes beachings
Submarines have been using low and mid-frequency active sonar technology, a deafening soundwave that is dangerous even 300 miles from it's source. Some mid-frequency sonar systems can put out over 235 decibals, which is about as loud as a rocket launch.
Animals for hundreds of miles literally jump out of the ocean to try to avoid the sound. The damaging effects vary, bet are akin to decompression sickness causing internal bleeding and bursting organs including lungs and eardrums. When beached dolphins are reported this sonar technology is rarely mentioned in the news, although the link has been demonstrated.
What can you do? learn more here
(update: court blocks sonar 7/6/06)