"Sea ice actually keeps water underneath warmer by preventing heat radiation to the atmosphere. It's how fish stay alive when ponds freeze over in winter.

There are studies using robotic buoys that was reported on recently showing that sea ice is actually funneling warming ocean waters much further into and under the ice sheet."

- This is a comment by 'yoghurt2 in response to Paul moulton' from the guardian article 'warmer seas could cause faster melting of Antarctic ice leading to rising sea levels, says study'

This comment hints at a new positive feedback mechanism... It is no more than speculation to me at this point as I have no scientific corroboration on the matter of course!

!!