So imagine something (lava, nucular, magic, idk) permanently heated a small section of the ocean. I'm thinking hot enough that a person would die instantly of heatstroke if they fell in or were on the shore (maybe like 160F/70C?). The surrounding water and air should be relatively normal. I would imagine that the hot water would evaporate much faster than the normal water creating a big pillar of steam/fog. This would cause updrafts of air. I would also imagine that there would be a rather strong inward current as the cold water fills the space left by the evaporating water. Because of all the steam and fog I could think there would be a lot of rain as well. Do these assumptions seem reasonable or is this totally impossible? Now suppose there there were massive pillars of rock sticking up out of the ocean with people living on top. They couldn't get off the pillars because if they went down to sea level they'd die of heat. I'm trying to figure out how high they would have to be to have a temperate or tropic climate. would the rain give them enough water to survive? Also, how high do you think they would have to be to be above the fog? Sorry for this really rambling question... any thoughts of advice would be wonderful!