Related Clues:
- Reverse somersault, e.g
- Hardly an attractive place to take the plunge
- Swoop in seedy club
- Talent for finding underground bar for a quick drop
- Something started from a springboard
- Seedy saloon
- Steep descent
- Order from a submarine captain
- Fixed fight finish
- Jump from a board above a pool
- Emulate an aquanaut
- Seedy hangout
- Explore a reef, say
- Go in headfirst
- Void seen after dizzying plunge