Scuba diving involves a wide, wild world of gear, but the three must-have items for an open water certification course are fins, mask, and a snorkel (other gear can be easily rented at dive shops).

When choosing a mask, fit is the most important consideration. Your local PADI shop will have a variety of models and brands on display, so try a few of each on and get the ones with the best fit. They can also be outfitted with special prescription lenses or less-expensive factory-standard inserts. Choose a fin based both on fit and water temperature. Diving in warm waters mean you can go with a full-pocket wrap-around model. Colder temps? Pick an open-heel adjustable model, which also requires a pair of booties worn along with the fins. Snorkels? Just be sure they’ve got a purge valve to clear water, a dry top to avoid waves spilling into the tube, and a comfortable, flexible mouthpiece.

Fit aside, we endorse the following:

Scubapro Twin Jet Fin
The split-tip blades on these fins mimic the tailfin of a humpback whale, giving you incredible kicking power with minimal exertion, and the three vents substantially cut resistance on up and down strokes, reducing overall drag. Go for the black ones for a stiffer feel, or the cobalt blue or yellow for a softer, light, more flexible touch.
($160; www.scubapro.com)

Tusa M14 Visualator Mask
Again, fit is the barometer for a mask, and if this one feels right, it’s one of the best. The single-panel lens has been moved to sit closer to your eyes, reducing the mask’s inner volume, and the mask face rides high on the forehead and droops down toward the cheek for maximum visibility. A five-position strap hinge offers unparalleled fit, though consider swapping out the standard elastic band for a neoprene model known in the industry as a slap strap—it’s infinitely more comfortable and will save you from getting your hair tangled.
($75; www.tusa.com)

Scubapro Nexus Snorkel
The swan-like neck of the Nexus curves for optimal exposure to breathable air when floating on the surface, the dry top keeps unwanted waves from crashing in on your breathing, and the angled purge valve keeps air bubbles from obscuring your vision. An ergonomic mouthpiece and extremely flexible neck also score high marks for comfort and easy storage.
($55; www.scubapro.com)