Strange sounds from the deep
http://apod.nasa.gov/apod/ap100427.html The bloop
NOAA has many microphones stationed all over the world's oceans looking for volcanic eruptions and such...but occassionaly they pick up sounds that they say come from *something living* http://www.pmel.noaa.gov/vents/index.html is the main page.
There is a bioaccoustics website....and an announcement that they are recording the calls of North Atlantic Right Whales which is really kinda cool.
good page for sounds together.