First you need to chop up all veggies, (except peas of course), in very small pieces.
Cilantro, hold bunch closely together and chop up very small as well.
Tuna, drain and add to veggies and cilantro in a large mixing bowl. Add peas, mayo, juice from 1/2 a lime and salt and pepper to taste.
Mix everything together well and serve with your favorite tortilla chips or on tostadas.