Doug Perrine / Hot molten pillow lava erupts from an underwater lava tube at ocean entry of Kilauea Volcano on Hawaii Island, Hawaii

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.

Graham Eaton / Pre-Cambrian age Pillow lava of the Gwna Group, formed as hot lava flowed into the sea. Lens cap for scale. Newborough, Anglesey, Wales.

Doug Perrine / Hot lava from Kilauea Volcano erupting underwater as pillow lava, offshore from Hawaii Volcanoes National Park, Puna, Hawaii,Hawaiian Islands, USA. 20th January 2013.

Doug Perrine / Hot lava from Kilauea Volcano erupting underwater as pillow lava, offshore from Hawaii Volcanoes National Park, Puna, Hawaii,Hawaiian Islands, USA. 20th January 2013.

Graham Eaton / Pillow lava of Ordovician age (440 million years), formed by lava rapidly cooling in the sea. Porth Dinllaen, Nefyn, Wales, July 2011.

Bryan and Cherry Alexander / Pillow Lava draped by slumped hyaloclastite, on the shore at Brown Bluff, Antarctica, October 2009.

Doug Perrine / Diver Bud Turpin observes erupting pillow lava at ocean entry of Kilauea Volcano on Hawaii Island, Hawaii. Model released MR 381

Doug Perrine / Videographer Shane Turpin films pillow lava erupting underwater at Kilauea Volcano, Hawaii, MOdel released MR 382