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a submarine volcano

a submarine volcano

a geographical feature called a submarine volcano

active volcanos

a volcano that erupts in the sea

a volcano called conoidal volcano

a volcano called a shield volcano

an elevation of the ocean floor, called ridge

Chilean volcanoes

a volcano called {simple volcano}

a geographical feature of the sea bed called {'sea hill'}

a submarine geographical feature, called deep

lava

the depths of the ocean

the eruption of a volcano

a submarine cable [volcano]

a geographical feature of the seabed called a sea valley

a volcanic eruption

a geographical feature of the sea floor, that is a gently sloping submarine ridge, called 'kaibo'

A volcano erupts.

matter released from a volcano called {volcanic sand}

an active volcano

an accumulation of volcanic matter in the ocean called volcanic mud

the extinction of the volcano

a geographical feature of the sea floor called a ocean basin

the crater of a volcano

matter released from a volcano called {volcanic block}

a volcanic released substance, called lapillus

the front line of volcanic activity in a volcanic zone

A volcano shows activity.