Water solidifies without freezing?

NO

You can start having solid water (aka ice), at least some special types of ice (there are 14 different types of water ice in all, believe it or not!), ABOVE the freezing temperature, IF you get to a pressure of over 10'000 atmospheres.

If you could reach 100'000 atmospheres, you could even have ice at temperatures reached in a cooking oven...

Now, the pressure at the deepest point of the oceans is about 1'100 atmospheres. So very far from enough to get ice. You'd need oceans at least 9x deeper (nearly 62 miles deep!) to have solid water at their bottom.

Problem: the Earth's crust is only about 6 miles thick at the bottom of the oceas, and never above 40 miles thick below the continents. So you'd need an altogether different planet to have oceans deep enough to get to "your" solid water.

Hope this helps

a

No, the only way water can be a solid is by being frozen. Water is denser in different locations of the Ocean. Temperature, salinity and pressure work together to determine water density (weight of water divided by the amount of space it occupies). Cold, salty water is much denser than warm, fresher water and will sink below the less dense layer.

The ocean waters can be divided into three layers, depending on their densities. Less dense waters form a top layer called the surface mixed zone. The temperature and salinity of this layer can change often because it is in direct contact with the air. For example, water evaporation could cause an increase in salinity, and a cold front could cause a drop in temperature.

The next layer is the pycnocline, or transition zone. The density here does not change very much. This transition zone is a barrier between the surface zone and a bottom layer, allowing little water movement between the two zones.

The bottom layer is the deep zone, where the water remains cold and dense. The polar regions are the only places where deep waters are ever exposed to the atmosphere because the pycnocline is not always present.

There is no solid water under the oceans; water would need to be put under great pressure (even more than the oceans), to solidify without the loss of heat.

I am going to take a educated guess on this one. Water hass great mass, just also has great give. How hard or solid does that ocean feel when you jump from an airplane with no chute at 50 feet high. It might as well be the sidewalk. In the deep oceans, there is so much weight on them that, it would seem feesable that yes it would be a harder substance to give so to speak. In hydraulics, car brakes for instance, brakes fluid act like a sold when being pushed from master cylinder to wheel. It has to or the air would compress and your pedal would fo to the floor

Yet the water itself cannot solidify, minerals in the water can. If you ever look at pictures of ancient cave systems or have been in any, you would see mineral deposits. Many of these are Fluorite Minerals.

no; just more-dense water (not solid water).