Freeze!

Kara noticed to late, that the portal has teleported her under the sea. Even a strong warrior like her, can't swim in her heavy clothes, so she has to act quickly. She tries to build ice around some particals under her, to create a big ice block, that hopefully will have enough buoyancy to bring her out of the water. Will she be able to do it?
 
Prompt:
Freeze! It takes seconds to realize that the portal has closed behind you. It takes another moment to realize you can’t breathe. Draw or write your character struggling for air as the water closes in around them.