I saw two episodes of naked and afraid where vegetarians survived. In one episode of naked and afraid there was a woman who was vegetarian and she survived off of bananas and coconuts, while her partner ate rats for protein.The woman who survived off of the fruit was able to swim to her rescue ship and even turn back to save her partner who's hip popped out of place when swimming. The second episode was with a women who had knowledge of edible plants and a ex marine who was up for a challenge. The woman who had knowledge of plants ate red almonds and river cabbage, the man had a hard time finding any thing to eat and started lacking energy. The women had enough energy to hunt food for the man who was beginning to starve and they both were able to make it through the challenge. After seeing this, it made me think it is very possible for a vegetarian to thrive in a survival situation.