diver 85
Contributor
'pumping'???......If this is correct, what is this called???.........tia......
![15502160917_b447e4ffa4_c.jpg](http://[URL="https://flic.kr/p/pBSCmv"][IMG]https://farm9.staticflickr.com/8536/15502160917_b447e4ffa4_c.jpg)
[/URL]IMG_0569 by GEAUXtiger, on Flickr[/IMG]
Last week while diving Brac, I took this pic of a sponge--& it looks like it's
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Feeding! Sponges draw water in through their external surface using flagellated cells known as choanocytes and then the filtered water is expelled through the large opening or osculum.
OP
diver 85
Contributor
Thanks Bill----I really didn't 'see it' going on till I got back home & started looking closely @ my pics.......lol, I guess that's what's going on --& not backscatter..
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