This name indirectly references an underwater feature in the Block Island Sound.

Several underwater hydrothermal features were discovered in the early 1990s and can be seen as slick spots or slight bulges in the summer.

During the winter, the underwater thermal features are visible as melt holes in the icy surface of the lake.

The continental rise is an underwater feature found between the continental slope and the abyssal plain.

Some sources state that the Philippines claims this underwater feature.

Saikaidō Seamounts are an underwater feature in the Philippine Sea.

A self-operated observation raft guides park visitors to vantage points overlooking the underwater features.

Many types of underwater features make an interesting dive site, for example:

There are a wide range of underwater features which may contribute to the popularity of a dive site:

And the dragging destroys underwater features like reefs, turning the bottom to mud.