Tui De Roy / Cerro Azul caldera with lake and tufa cone at 5,900 feet, Cerro Azul Volcano, Isabella Island, Galapagos Islands, Ecuador

Doug Perrine / Shimmering heat waves distort the image of diver as he samples erupting pillow lava at ocean entry of Kilauea Volcano, Hawaii Island.

Doug Perrine / Videographer filming pillow lava erupting underwater at Kilauea Volcano, Hawaii.

Doug Perrine / Diver shaping erupting pillow lava by hand to form underwater lava sculptures at ocean entry from Kilauea Volcano, Hawaii.

Doug Perrine / Diver sampling red hot pillow lava at underwater eruption of Kilauea Volcano, Hawaii.

Doug Perrine / Hot molten pillow lava erupts from an underwater lava tub at ocean entry of eruption from Kilauea Volcano, Hawaii, USA

Juergen Freund / Cabbage coral (Scleractinia) in coral reef near Gunung Banda Api volcano, these corals thrived in lava flow from the 1988 eruption. Banda Neira, Banda Islands, Indonesia.

Juergen Freund / Cabbage coral (Scleractinia) in coral reef, diver in background. Cabbage coral thrived in lava flow from the 1988 eruption. Near Gunung Banda Api volcano, Banda Neira, Banda Islands, Indonesia. 2018.

Juergen Freund / Cabbage coral (Scleractinia) in coral reef near Gunung Banda Api volcano, these corals thrived in lava flow from the 1988 eruption, taken with fisheye lens. Banda Neira, Banda Islands, Indonesia.

Juergen Freund / Cabbage coral (Scleractinia) in coral reef near Gunung Banda Api volcano, these corals thrived in lava flow from the 1988 eruption. Diver in background, taken with fisheye lens. Banda Neira, Banda Isl...

Juergen Freund / Cabbage coral (Scleractinia) in coral reef near Gunung Banda Api volcano, these corals thrived in lava flow from the 1988 eruption. Diver in background. Banda Neira, Banda Islands, Indonesia.