deep sea canyons
They are both giant holes in the ground. Trenches are found underwater and valleys are found on land.
This is known as an oceanic trench.
Underwater mountains are sometimes called "seamounts."
An underwater volcano is called a submarine volcano.
None. Valleys are called glens in Scotland.
There is no such thing as an underwater tornado. An underwater vortex is a whirlpool.
An underwater bubble blower.
They are called trenches.
an underwater avalanche is a earth quake
They are called hanging valleys. The smaller glacier valleys are the hanging walls that join the deeper main valley called the U-shaped valley.
they are called valleys
Nothing...if it's underwater, it's not an island!
The valleys in New York are called towns. Like the outskirt of a city is a town.
yes there is
An underwater bomb is called a 'depth charge.
A group of ducks called diving ducks swim underwater. Mallards can swim underwater if threated. Geese do no underwater swimming.
The island of maui is covered with many valleys created from the underwater volcanoe when it erupted hundreds of years ago. It is called the valley island because if you were to fly over the island, the first feature you will notice are the multiple valley's covering the surface of the island. Compared to the other hawaiian islands(Kauai, Oahu, Lanai, molokai, Hawaii, etc.) Maui has the most valleys. So basically, Maui is valley island cause it is covered with valleys, though some are too small to be officially called a valley.
No, all of them aren't found on dry land, some are found underwater
There is no such thing as an actual tornado underwater, as a tornado is, by definition, a vortex of air. However, a vortex underwater is called a whirlpool.