How to fix a tare in a weatsuit?

ok so i have always been into snorkling and when i movied down south the first thing i got was a wetsuit (never used one before) ok so i am out snorkling and im not sure what made me do it but i decided to try and sit on top of one of the granite boulders coming out of the water and as i am doing it my but scrapes on some of the barnacles and now there is a small tear in my wetsuit about the size of a 10c peace. so how can i fix this? i looked on the internet and they all seemed to deal with gashes not a round tear. the tear dosnt go al the way through it went through most of it except a thin layer made out of that rashee material. so i dont think i can fold it put the glue in then squeeze it together...... any ideas?