Dive News
Reef reports, dive-site deep dives, course comparisons and practical island advice.
Courses & TrainingThree Cozumel specialty dive courses earn their place on a week-long trip: Peak Performance Buoyancy, Enriched Air Nitrox, and Deep Diver if the southern walls are why you came. Most of the rest are better taken at home, or skipped for more diving.
Carmen Novelo · April 23, 2026 · 17 min read
Gear & EquipmentA brand-new mask fogs because of a silicone film left on the glass at the factory, and no defogger will stick until you scrub it off with a gritty non-gel toothpaste. After that, coat the dry lens, swirl out the excess, and stop touching it.
Carmen Novelo · April 21, 2026 · 17 min read
Trip PlanningPlanning a dive trip to Cozumel from the USA comes down to five decisions: nonstop into CZM or Cancun plus the ferry, passport and entry rules, 225 pesos a day in cash for the park, dive accident cover, and keeping your last day dry.
Carmen Novelo · April 20, 2026 · 17 min read
Cozumel DivingMost diving couples are mismatched somehow, and every version is solvable. A non-diver rides the same boat for $55 to $85, Discover Scuba puts you both under the same morning, and a private guide at $85 to $110 a day fixes an experience gap.
Carmen Novelo · April 19, 2026 · 17 min read
Courses & TrainingNitrox does not let you dive deeper, it does the opposite. Trading nitrogen for oxygen buys longer no-decompression limits but puts a hard ceiling above you, and on several famous Cozumel sites that ceiling sits shallower than the dive.
Carmen Novelo · April 17, 2026 · 18 min read
Cozumel DivingBeing nervous before a first dive is normal, and almost everyone is, including people who go on to dive for thirty years. What helps is working out which fear you actually have, because generic reassurance fixes none of them.
Carmen Novelo · April 13, 2026 · 3 min read
Marine LifeSharks at Cozumel dive sites are almost always nurse sharks, lying motionless under a coral ledge and ignoring you entirely. The island's documented bite record is two incidents, both in the 1990s, across hundreds of thousands of dives.
Carmen Novelo · April 12, 2026 · 17 min read
Dive SafetyTwo rules cover most of what goes wrong with ears underwater: equalize before you feel pressure rather than after, and never keep descending against pain. Cozumel adds negative entries, which remove the surface pause slow ears depend on.
Carmen Novelo · April 11, 2026 · 7 min read
Cozumel DivingYou do not dive alone in Cozumel even when you arrive alone: every boat dive is guided, and a diver without a partner is assigned one or kept beside the guide. The real solo penalty is the hotel room, which is priced per room, not per diver.
Carmen Novelo · April 10, 2026 · 17 min read
Cozumel DivingMorning two-tank boats put you back on the dock between 12:30 and 1pm, and the pier you used decides where you eat. Downtown has a dozen kitchens within a ten-minute walk; from Marina Fonatur, nothing is walkable at all.
Carmen Novelo · April 9, 2026 · 18 min read
Trip PlanningFor a certified diver the useful question in Cozumel is not which reef is best but what order to dive them in. Start shallow while you re-find your weighting, save Punta Sur and Devil's Throat for mid-trip, finish shallow before flying.
Carmen Novelo · April 7, 2026 · 16 min read
Dive CentersPADI 5 Star is a retail rating, not a safety score. Here is what a Cozumel dive center actually has to do to hold it, what it tells you nothing about, and how to verify any shop in thirty seconds.
Carmen Novelo · April 6, 2026 · 10 min read
