Any experienced diver knows that you need more than just the basics in your gear bag. We picked the best of the rest from our 2018 scuba diving Gear Buyers Guide — including, DPV's, reels, and more.

Garmin’s satellite communicator devices link users to worldwide coverage of the Iridium network (subscription required) to enable SOS triggering 24/7 to the search and rescue monitoring center, two-way text messaging and social media sharing. Its full-color screen displays GPS tracking, and you can pair with Garmin’s Earthmate app to access downloadable maps such as U.S. NOAA charts and more.

This tank-mounted DPV is capable of forward and reverse thrust and is controlled with a small handheld switch. It reduces exertion and provides added mobility to photographers and adaptive divers. The Nautilus delivers 25 pounds of forward thrust and runs off its rechargeable lithium-ion batteries for 50 minutes on full power.

A favorite accessory of photographers and drift divers, IST’s JL6 line hook comes with a sturdy stainless steel hook and swivel clip with a steel, wire-reinforced coil in between. The coil extends to about 5 feet in length. Clip one end to a D-ring and hook the other end beneath a rock to take a break during a drift dive or to stay stationary for a photo op.

Ist’s aluminum reel comes with 100 feet of braided line, the first 15 of which is orange in color. This contrasts with the remainder of the braided line, which is yellow, and acts as a decompression stop reminder for divers. The braided line is capable of holding up to 176 pounds of weight, and the large finger hole makes for easier winding when wearing gloves.

Featuring the new Snorkelator, a patented technology that combines your snorkel with any diving regulator, this system includes a 19-cubic-foot cylinder, a padded harness, special first and second stage regulators, and a mini pressure gauge. The entire kit weighs 15 pounds and comes with an air compressor refill adapter.

If you’re looking for a redundant backup air source that takes up virtually no space on your dive rig, there’s the Spare Air Model 170. Known as the smallest portable air delivery system in the world, its size allows for a variety of mounting options. The 1.7-cubic-foot black anodized tank refills easily from a scuba tank using the included adapter.

The Spare Air 300 has been the go-to backup air delivery system for recreational divers for decades. The 3-cubic-foot tank with its breathe-on-demand regulator is nearly neutrally buoyant and stows in its own holster that attaches to your BC, ready for any out-of-air emergency. Refill it from your own scuba tank with the included refill adapter.

Divers who are accustomed to traveling with wet suits can now power dry their dive suits in mere hours. The HangAir uses a powerful waterproof fan to dry and ventilate suits of all kinds. This also slows the development of foul odors, and prolongs the life of the gear. The HangAir is sturdy, supporting up to 100 pounds.