iNaturalist Map Explorer
UI/UX for mobile
iNaturalist.org is an amazing resource featuring millions of species observations from all over the planet, crowdsourced from everyone from career scientists to everyday observers …
Visibility in the Pacific Northwest: Summer
Notes on "peak season"
If you watched Blue Planet II, the “Green Seas” episode featured intensely productive coastal and inland marine zones in temperate latitudes, where seasonal cycles of …
Topo maps for divers
Thanks to NOAA
If you’re impatient, skip to the bottom of this post for an explorable/interactive map of Hawaii Island!
The underwater world is largely unseen by most, in part because there …
Flagpole Point
sbadil q̓aƛ̕əb? (On a flood)
The Hood ‘Canal’ (fjord) is a long, somewhat deep fjord in Washington guarded by a shallower underwater sill that limits circulation between it and the rest of the …
Northwest Island
The archetypal PNW DPV dive?
A chance to revisit the outside wall of Northwest IslandNorthwest Island is a rocky prow guarding the lovely bay at Rosario Beach, and conveniently exposed to the flushing waters …
Using oxygen as an 'inert gas' (aka NITROX)
and its relation to 'Martini's Law'
Compressed air with higher proportions of oxygen (aka NITROX, EAN) is commonly used in recreational and repetitive diving, due to reduced bodily absorption of nitrogen, which …
Slacks widget
Visualizing slack times for quick reference
I created a web widget to conveniently display upcoming slack times, according to the NOAA current predictions. XML info is queried for specific sites and dates using the NOAA …
The metric system (for diving)
The USA has the curious distinction of being effectively the only nation in the world that has declined to move on from the old English imperial system of measures. Many divers in …
