"Do they get an early warning and escape the caldera before it gets explosive, or do they get trapped and perish in steam and lava?" ocean engineer Brennan Phillips asked in National Geographic's Explorers Journal.
Even though the volcano wasn't erupting at the time, it's often burbling with hot lava, ash, and steam, he said. And since the water in the volcano is presumably hotter and more acidic, the discovery also raises questions about the animals' adaptation to the extreme environment.
“That’s the best project, is to go out with one question and come back with many,” Phillips said in the video.