- + Simple J-tube design with no unnecessary mechanisms
- + Low dead air space, clears with a single exhale
- + Flexible mouthpiece comfortable for extended surface intervals
- + Short tube (appropriate 35cm length)
- + Very low price
- − No purge valve: must clear by exhale or tilting (which is correct, but takes adjustment)
Overview
The Cressi Corsica is a fixture on beginner freediving kit lists, and it keeps being recommended for good reason. It costs $20 and does exactly one thing, let you breathe with your face in the water while swimming between dives, without any mechanism that slows clearing or adds dead air volume.
Why Simplicity Matters
Every freediving snorkel design principle points in one direction: less is more. No purge valve (adds dead space, slows clearing). No dry-top float mechanism (partially blocks the tube underwater, clears slowly). No flexible accordion joint at the mouthpiece (adds volume, traps water).
The Corsica has none of these. It's a J-shaped tube with a mouthpiece. That's the design. The tube is appropriately short at ~35cm. The mouthpiece is soft enough to be comfortable during 2-3 minute surface intervals between dives.
The Clearing Adjustment
The only adjustment for divers coming from purge-valve snorkels: you clear the Corsica with a sharp exhale, not by sucking through a valve. This takes one or two sessions to make automatic. After that, clearing is faster than any purge valve, the J-tube exhale blast is essentially instant.