Field guides, model explainers, and product thinking.
Long-form writing from the Submarius team — for spearos, divers, anglers, and boaters who want to understand the ocean better, and for technically-curious readers who want to see how we build honest forecasts.
A verdict, not a dashboard: why your ocean app should just tell you to go
Every marine app throws numbers at you and leaves the decision. That's a design failure dressed up as transparency. The case for apps that just answer: is today worth it?
How Kd490 satellite data predicts water clarity
The oceanography behind Submarius's visibility forecast — what Kd490 is, how a satellite measures it from orbit, and how Lee et al. 2015 turns it into a Secchi-depth estimate divers can use.
How to predict water visibility for diving and spearfishing
The six signals serious divers and spearos read before a trip — wind, swell, rainfall, tide, chlorophyll, coastline geometry. What each does to viz, and what satellite data adds today.