Why do the largest animals live in water?

Animals adapt to fit their environment. There is only so much space on land, so animals only get so big on land. There is a LOT more space in the water, so animals can get a whole lot bigger in the water. read more

Second, due to the thick layer of blubber (over 1 ft. of blubber in some species) and lack of water the whale would quickly overheat, get dehydrated and dry out. In fact this is commonly seen among beached whales that end up dying due to heat exhaustion. The cool temperature of the water is essential for their survival. read more