I think the coasts will make lovely coral reef's.
Simulated Process maybe? You tell me.

Tetka bubbles.

New york submarine tours. Great for tourism :)

This has potential. Love the swirls up the t-shirt. Goin mad wi the swirly thing in Illustrator is always fun! It's like a lava lamp.

I think there is maybe a bit too much going on here, though. Sometimes less is more. The bubbles don't quite fit in with they style and the green and red starfish squiggly things are maybe a bit too much.

I like the buildings in the background, they're atmospheric. I think I would have them on their own against the squiggles and miss out the statue and sea creatures.

Lots of potential. Keep having fun!! Look forward to seeing more of your designs.

I don't know. . .this is shirt looks like
one of those shirts that if you're a person
with any kind of "curves", this wouldn't
look good on. . .
=/

It's a fantastic design, though!