El Hierro vigorously degassing...

carbon dioxide from its submarine edifice in the southwestern Canary Islands, as seen in this echogram acquired between April 5-9 by a Spanish oceanographic vessel observing the eruption (click to enlarge):

The ocean surface is minimally disturbed, though slightly discolored, by this activity according to recent  reports, and I will be arriving in the Canary archipelago near this location in about two weeks.

 Track current activity here if you dare: El Hierro Volcano : Yellow alert.

Image courtesy El Instituto Español de Oceanografía.