Couple of Questions about pollenation

Hey everyone hope your all doing well just like to say thank you to the people running such a beautiful blog site about the most amazing process of weed before i get into the pollination stuff i have a quick question if anyone could help me, i have been hearing something about a species of marijuana that actually grows underwater, its not a plant that has been put upside down in water, its more like a coral growth or fungi on deep sea ocean bed. Now I've tried looking for anything about this on the net but unfortunately haven't found anything remotely close to what i have been told so if anyone out there knows anything about it or knows where to go to find out more it would be great if you could let me know

Ok down to business, I've been growing for quite a while now, it is only bush but i get very nice strains and most of the time have bud that you would mistake with quality hydro but the past few crops have been pollinated just near budding and ruined my beautiful baby's, i always salvage what i can from the plants or try n stun the plant into being female again if i catch it early enough, now i know that any male plant in a one kilometer radius can send of it's spores to infect other plants but i was wondering if there was anything i could use to protect my special lil girls from getting owned, apart from shade cloth though because i don't want to restrict anymore light from them.

If anyone has any pointers that would be awesome cheers