How would the world be different if ice were more dense than water

It would alter ecosystems.

Explanation:

If ice were to sink and liquid water were to float on top of ice, then that means that all ice would deposit at the bottom of the ocean. This means that the temperatures of all oceans would be reduced significantly. If this is the case, then marine biology would look very different than it normally looks today. Also, because there is a theory that life originated from microorganims in underwater volcanoes, we have to realize that It would have made life much more complex.

"a scientist studying a whale and its surroundings would need to understand the structure of atoms in case something was negatively affecting the whale or its surroundings."

explanation:

this was from the link provided:

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes