Southeast of Galveston in the Gulf of Mexico, the Stetson Bank (aka Stetson Rock) is popular for snorkeling. The Stetson Bank is located about 48km northwest of the Flower Garden Banks National Marine Sanctuary and about 120km southeast of Galveston. The reef cap at Stetson Bank starts about 80 feet deep. When snorkeling at Stetson Bank, you may see stingrays, hawksbill turtles, manta rays barracuda, grouper and scorpionfish.
The cooler winter temperature at Stetson Bank, relative to the Flower Gardens, prevent coral reefs from thriving. Instead, scattered coral colonies with a dominant sponge community occur. Stetson Bank is a surface expression of salt diapers capped by uplifted layers of claystone and sandstone, which have eroded at unequal rates to create a strange "moonscape" appearance. It is among the smallest of the mid-shelf banks in the northern Gulf of Mexico.
Overall, Stetson Bank is the 2nd most popular snorkel dive spot of all 4 snorkeling dives in Texas.