At level 100, this Shuckle has a defense stat that is 466, and a Special Defense stat equaling 542. Quite a wide difference there, about 80 points separated. A person using this Shuckle had better watch out for attack based moves if they are relying on defense.
Much of this deep ocean water is between 0-3 degrees Celsius (32-37.5 degrees Fahrenheit)! It's really, really cold down there! There is a neat program that is measuring the temperature and salinity of ocean surface waters around the world.
It appears that the surface temperature ranges from about 820 degrees to nearly 900 degrees F. The average surface temperature is 847 degrees F., hot enough to melt lead. No wonder the ocean basins are dry. At these temperatures any water would evaporate nearly instantaneously.