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- Path: sparky!uunet!mcsun!uknet!edcastle!cam
- From: cam@castle.ed.ac.uk (Chris Malcolm)
- Newsgroups: sci.misc
- Subject: Re: Whales blowing rings
- Message-ID: <24322@castle.ed.ac.uk>
- Date: 30 Jul 92 13:07:48 GMT
- References: <1992Jul27.142023.28312@news.acns.nwu.edu> <c7lm+5g@lynx.unm.edu>
- Organization: Edinburgh University
- Lines: 21
-
- In article <c7lm+5g@lynx.unm.edu> egates@triton.unm.edu (EL GATES) writes:
- >In article <1992Jul27.142023.28312@news.acns.nwu.edu> dsk@nwu.edu writes:
-
- >>They were just breaking the surface from underwater, collecting a small bit
- >>of air, and blowing it under water into perfect rings (similar to smoke rings.)
- >>After the rings spun and grew and moved a bit, the whales would swim down and
- >>bite part of the ring, or try to swim through it, until it collapsed. Then
- >>they went back to the surface, and did it again.
-
- >I have no idea why whales do it or if it is common behavior, but I
- >have seen sea lions at the local zoo make bubble rings as well.
-
- Some whales catch fish this way. They encircle part of shoal with a
- rising ring of bubbles, and then charge up the middle of the ring with
- their mouths wide open. I saw this on a TV wildlife film, in a
- location famous for this behaviour at a certain time of year -- the
- whales turn up at the right time for the fish harvest.
- --
- Chris Malcolm cam@uk.ac.ed.aifh +44 (0)31 650 3085
- Department of Artificial Intelligence, Edinburgh University
- 5 Forrest Hill, Edinburgh, EH1 2QL, UK DoD #205
-