[Cnidaria] Aurelia aurita mass murder!

[jamileh javid]

Dear Cnidariologists!
We have found today morning a  mass of dead Aurelia with  swollen 
gastric pouches( see attached pic.).  may it be due to a high traffic 
level of big boats which we had last weekend in Kiel ( it was a sailing 
event )? I have never seem this eaten bubbles inside Aurelia in last 4 
years of my work in Kiel, even after sailing event.Do you have some 
explanation for?
Jamileh
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