Penguins and bubbles

Subject: Penguins and bubbles
From: Stephen Ambrose <>
Date: Wed, 25 Mar 1998 17:28:57 +1000
My memory may be playing tricks on me, but I seem to recall seeing
submerged penguins exhaling bubbles of air when predatory seals were
nearby, in a David Attenborough documentary a couple of years ago.

The bubbles were produced by a group (raft, flock, herd?) of penguins,
which irritated/tickled seals that got in the way. Can anyone else recall
seeing this?

I know that Hump-backed Whales use bubbles to round up schools of fish for
food, which I also saw on a DA doco.

Dr Stephen Ambrose
Research Manager
Birds Australia (Royal Australasian Ornithologists Union)
Australian Bird Research Centre
415 Riversdale Road,
Hawthorn East,
VIC   3123.
Tel:    +61 3 9882 2622
Fax:    +61 3 9882 2677
Email:  S.Ambrose <>  (at work)
             <>   (at home)

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