This is a level made for precision swimmers. This is difficult but fair.....except for a couple hidden blocks. Swim through, avoid spikes, fire, hidden blocks and collect the coins. Im setting as an expert level but its probably inbetween normal and expert.
I made this level taking cues from the old NES game TMNT. This is similar to the Dam Level. The spikes are seaweed, the fire is the electric gates, the coins are bombs, and the hidden blocks are me making it harder.
No one has made it past the first area you see at the beginning.
Good luck.