T.BLHL blowhole(s)

a hole in coastal rock through which sea water is forced by a rising tide or waves and spurted through an outlet into the air

17 features in 9 countries.

#CountryFeaturesShare of the world
1AustraliaAU5
2GuadeloupeGP3
3ReunionRE3
4ColombiaCO1
5Cayman IslandsKY1
6Northern Mariana IslandsMP1
7MexicoMX1
8French Southern TerritoriesTF1
9TongaTO1
Total17