It didn’t make sense that you cannot take on water at all.

Second water is wilderness and there are sea snakes that are the most poisonous on our planet. Why can it not be called on water?

Thank you for the consideration.

You part your lips and hiss into the water, sending a churning school of sea snakes towards an enormous blue whale.
The snakes strike at an enormous blue whale!
Your biting snakes *** DEVASTATES *** an enormous blue whale!

Not sure what you're talking about.

If water isn't wilderness for you, then surprise, you can't use it in non-wilderness.
If water is wilderness for you, you can.