Possible Clues:

• Sink unblocker
• Tool that unclogs using suction
• Drain unblocker
• Uses water pressure for each covering over organ in cage
• Device for clearing blocked drains
• One makes a dive for what has a breath of inside
• Help for a draining job?
• Sink-unblocker
• Pure luck at the outset no good, unfortunately, for the diver
• For each one taking a breather, there's one taking a dive