Cacti | Fun facts about cactuses: 1. Cactus can gather and hold a lot of water in their stems. The water is not pure, clear water but is quite a thick viscous liquid that has been known to save lives in the desert. 2. Dragonfruit grow from a species of cactus called pitahaya 3. There are roughly 1,800 different species of cactus. 4. Cactus spines (thorns or prickles) are highly modified versions of plant leaves. #fellaswim #cactus