Eventually it would break through the surface of the ocean and then form an island.
you will get berned and die
it can stop the tornado
The underwater volcano would eventually emerge from the sea and become an island. For example, each of the islands in the Hawaiian Islands chain were formed from vocanoes, and the Big Island of Hawai'i is STILL erupting. Iceland was created the same way. Many South Pacific islands were originally undersea volcanoes which erupted, formed an island, and the island became ringed with coral reefs.
all the fish would die
It would take a long time but eventually either a new island will form or if the underwater volcano is close enough to land a current island we become larger
In that case, the volcano would be referred to as dormant.
A volcano that does not stop erupting would create a pretty big mountain from all the lava piling up and cooling down.
That would describe an active volcano.
lower magma reserves or the volcano tube has closed/shifted.
At an erupting volcano.
The volcano drains the lava by erupting. There is no internal drainage network.
A submarine Volcano.