A sealed camera, a red filter, and a way to not drop it. The ocean is not the place to learn that a “waterproof” camera is only splashproof.
A current action camera and a real dive housing if you go below a pool. Those two are the kit.
This is the other kit where the device is the gear. A current GoPro Hero Black-class camera (or similar) is small enough to take snorkeling, surfing, and travel, and the files are good enough to edit. Skip generation numbers in the search — buy the current Hero Black.
What to look for: A current flagship action cam with a good wide mode, solid stabilization, and a battery you can spare. A second battery in the dry bag is part of owning it.
The stock waterproofing is for rain and shallow snorkels. Real depth, repeated dives, and salt need a dedicated housing with a rated seal. Housings also take color filters.
What to look for: A housing rated for the depth you actually dive, made for your camera model, with a working button map. Check the o-ring every trip.
Skip it if: you only shoot above water or in a pool with the stock waterproofing, and you stay well within that rating.
Water eats red. A filter and a float are how shots come back with color — and come back at all.
Water filters out red as you go down, which is why unfiltered footage looks blue-green. A red (and magenta, for tropical green water) filter restores color in-camera so you are not fighting the files later.
What to look for: Filters that fit your housing or the camera’s lens mod, one for blue water and one for green. They do not replace a strobe at depth, but they help snorkel and shallow dive video.
Action cameras sink. A float grip (or a floaty back door plus a wrist strap) is the difference between a story and a very expensive reef decoration.
What to look for: Positive buoyancy with the camera attached, a wrist strap you actually wear, bright color.
Fog and wet bags ruin more trips than bad cameras.
A sealed housing plus a warm camera in cold water equals fogged glass. Disposable anti-fog inserts are cheap and they work if you close the housing dry.
What to look for: Inserts sized for your housing. Dry the interior with a towel before you close it — inserts cannot fix a wet seal.
Phone, spare battery, towel, keys. A small roll-top dry bag on the boat or beach is the rest of the system. The camera can get wet; the spares should not.
What to look for: 5–10 liter roll-top, bright, with a lanyard.
Not to start. An action cam plus a rated housing covers snorkeling and most recreational dives. Dedicated stills rigs (housings, strobes, wet lenses) are a different, much more expensive hobby.
You can grade, but you cannot recover color that was never recorded. A filter puts red back on the sensor. It is not perfect, and strobes beat filters at depth — but for snorkel video, filters are the practical fix.
For rain, surf, and shallow snorkel within the published rating, usually. For diving, repeated salt, and anything near the depth limit, use a housing. The rating assumes a perfect rear door and no scratches on the seal.
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