1. Submarine eruptions are a type of volcanic eruption that occurs underwater.2. Two formations associated with submarine eruptions are seamounts and pillow lavas. 3. In October a submarine eruption occurred about south of Restinga. 4. There was a submarine eruption southeast of Hellisey in 1896. 5. Submarine eruptions are less studied than subaerial volcanoes due to their inaccessibility.6. There is much variation in the style of submarine eruptions . 7. Geologically, Monte Brasil is a wide, tuff cone resulting from a basaltic submarine eruption . 8. A submarine eruption in 1891 from a vent off the northwest coast is the only confirmed historical activity. 9. Additionally, isotopic records of seawater in sediments have been associated with the 90 Ma OJP submarine eruptions . 10. The submarine eruption has built a new island in the group, in between Rugged and Haycock Islands.