 The only known fatalities from the eruptions was during the 1778 eruption when fifteen were killed from falling lava bombs.At approximately 4 am, 22 June 2019 it erupted, with a plume of ash and gas reaching between and , passing the tropopause and allowing stratospheric injection of ash and sulfur dioxide.Raikoke is one of five major Steller sea lion rookeries on the Kuril Islands and in the spring and summer it is home to one of the largest northern fulmar aggregations on the Kurils; crested and parakeet auklet, pigeon guillemot, and black-legged kittiwake also nest on the island.