Comparison4 min
Shore snorkeling in the US, spot by spot
Every US spot on this site you can snorkel from the beach, with the source for each claim. A shorter list than most, because a spot only appears once it has been checked.
Writing
What the data says
Statistics computed from the same live feeds behind every conditions page on this site, and ranked comparisons of the spots in the index.
- Data4 min
Why some spots show tide times and others don't
How far the nearest NOAA tide station really is from the water people swim in, measured across every spot on this site, and what that means for the number on the page.
- Data4 min
How we estimate water visibility
No agency publishes a live feed of underwater visibility, so this one is derived. The inputs, the weighting, the score bands, and what the method gets wrong.