Make every dive count.
Log what you saw. Underwater Log turns those sightings into a growing record of where and when marine life is actually found.
For divers, for dive centres, and for anyone leading a group.
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What the logbook knows about, written up.
Over the years the site builds up a record of each animal: where it is seen, at what depth, and how hard it is to find at each destination. It is the same list the logbook offers you on the boat.
It shows what has been recorded over many dives. Use it to choose a destination or a time of year.
A rating here is a count of dives.
A rating is a count: how many dives looked for one animal at one place, and how many of them found it. Each count comes from divers who looked for the animal at that place and logged what they saw.
None of the ratings are counts yet. All 6,084 of them are editorial estimates, and every page says so. An estimate is replaced by a count once enough dives have been logged at that location, one species and one place at a time.
Ratings are updated when divers log their dives.