You might be able to freedive with your snorkel gear, but if you get serious about the sport, you’ll need gear that’s specially made for it. Here are a few products made for high-performance freediving.

1-2. Sherwood Scuba Onyx ARL Mask and Onyx Snorkel

ARL stands for anti-reflective lenses, which allow more light to enter the mask, brightening the view. The low-volume Onyx mask has a supple dual skirt and soft nose pocket. The snorkel is a classic J-shaped snorkel with a contoured barrel. $115, mask; $40, snorkel; sherwoodscuba.com

3. Oceanic Enzo

These fins have fixed plastic blades, stiffened by ripples that run the full length of the blade, which channel water flow on the top and bottom of the blade. The minimalist design, with plastic struts rather than thicker rubber stiffening the sole, also keeps the Enzo ultralight. $99.95; oceanicworldwide.com

4. Body Glove Titanium .5 mm Freediving Suit

This suit is built with .5 mm titanium material and flat-lock seams; if you’re freediving to spearfish, the camo pattern will help you blend in with the underwater terrain. $150; bodyglove.com