In the waters where Melatonintails and Caffeinetails live other creatures will still take up the waters every if there are side effects, other use it as a advantage like this coruisne right here will drink up the water and store any caffeine or melatonin it detects in parts of its own body. It will do so for 2 mine reasons: 1 being that it can use any of the 2 substances for its use. 2 being that it can use it as a defense so when it gets bitten it will release a massive amount of 1 or both of the substances to help solve its being bitten problem, good thing this slime creature is able to regrow parts of its body. This one here is able to store about 1000MG of caffeine and 500MG of melatonin.