Rain falling on the surface would slightly alter the saline content, at least temporarily. Also, very salty water is denser, so would allow less dense rain water to float near the surface.
At the surface of the ocean in the warmest area of the ocean.
0 mm. When you watch the tide go out and see rocks emerge, the ocean bottom is now at the ocean surface.
Submarines can see the surface of the ocean with a periscope when they are close to the surface.
The size, and how close to the equator they are.
mount k2
the fish that live close to the surface are not unusual and the fish that live in the deep ocean are unusual. the unusual and surface fish both eat different thing's don't live the same way
Europa, a moon of Jupiter, is believed to have a frozen ocean beneath its icy surface. This ocean is thought to be in contact with a rocky seafloor, potentially providing conditions suitable for life to exist.
Because they need to be close to the surface to be able to perform photosynthesis.
It covers about 71% of the Earth's surface.
Under-GROUND oceans? Probably not; the current estimates for Europa indicate that the surface is probably ice, with perhaps oceans beneath the ice. If the oceans are made of water rather than some more exotic liquid, then there's at least a possibility that life might exist in that ocean.
Yes, polyps typically live close to the surface of the water on the ocean floor or on rocks in coral reefs. They use their tentacles to capture food particles from passing water.
the entire ocean doesnt freez... just close to the surface... and certain animals can adapt to many harsh environments