This was super cute!! The idea of swimming through the ocean as a squid eating stuff really appeals to me. Reminds me a bit of the first part of Spore where you're just a little amoeba swimming around eating other things in the water.
I thought it was a bit too easy, maybe you could have ramped up the difficulty with more enemies or things flying much faster at you as time went on?
Anyways, nice work with this!