Carp can tolerate low oxygen levels but when it gets very low they carp gulp water on the surface where the oxygen level is higher as the oxygen is absorbed by the water.
Peter
from: Margaret Leggoe [
Sent: Monday, 18 February 2013 7:57 PM
To: 'Julian Robinson'; 'canberrabirds chatline'
Subject: RE: [canberrabirds] What might this be? (Slightly bird related)
When Kelly’s was becoming a tad slimy and the carp were gasping their last, large water bubbles remained on the surface for quite a few seconds before disappearing.
Margaret.
From: Julian Robinson
Sent: Tuesday, 19 February 2013 12:05 PM
To: canberrabirds chatline
Subject: [canberrabirds] What might this be? (Slightly bird related)
On the smallest of Callum Brae’s dams was a nesting Australasian Grebe. As I was photographing it close to its nest, quite suddenly the 5 to 7 bumps shown in the photos appeared nearby. They/it didn’t appear like bubbles, seemed solid, all the same size and didn’t burst or disintegrate like bubbles. They appeared to be parts of one thing, like the Lock Ness monster. The Grebe turned to look at this thing and by 7 seconds later it/they disappeared, though I didn’t see in what manner.
Does anyone have any idea what it/they could be? The pale thing in the foreground is a leaf.
Julian
Sequence below…
Photo 1 @ 0 secs (no blobs)
2 @ 1 second (blobs appear, all together, with wave-rings radiating outwards)
3 @ 2 seconds (bird turns to look at blobs)
4 @ 7 secs (blobs gone)
