I mean 30 meters laterally. End of net, 30 meters of fish & marine mammals & whatever else is caught in the net, me in the middle several meters from the edges, incoming tons of marine life to pack on top.

Honestly, having oxygen would make the terror of a prolonged death worse.

Yeah, I’ll be 30 meters deep in a trawling net half a kilometer long, manoeuver my way past the piling realize to the outer boundary, reach into my pocket and start sawing my way through inch thick reinforced cord until I make a hole big enough to wriggle through and swim to safety!