Rocks in the sea are simply called rocks. There isn't a specific term for them. However, depending on their location and formation, you might hear them referred to as:

* Sea rocks: This is a general term for rocks found in the sea.

* Coastal rocks: This term refers to rocks found along the coast.

* Sea stacks: These are tall, isolated rocks that are formed by erosion.

* Sea cliffs: These are steep cliffs that are formed by the erosion of the coastline.

* Boulders: These are large, rounded rocks that are often found on beaches.

* Pebbles: These are small, smooth rocks that are often found on beaches.

Ultimately, the specific term used will depend on the context and the specific type of rock.