Weave through the reef — over the peaks, under the overhangs,
through winding rock pillar formations that get tighter every level.
The reef only moves when you do — push forward to explore,
or turn and swim back as far as the start of the level.
The fish are cloaked: your AR visor reveals them, and they
swim the safe line — follow the food, refuel your energy, don't run dry.
Watch for hidden mines.
SPACE or SCAN fires a sonar pulse to light everything up. ←↑↓→
or mouse / touch-drag to swim.