What is a fish Extender? A fish extender is a gift exchange amongst a group of people who have signed up prior to the cruise (usually in a FB group) that has committed to bringing gifts for a certain Amount of people on the cruise. There is no price limit or gift expectation, you can gift anything you want , from stickers to customized gifts for each person. We signed up for one on our second cruise and it was awesome ! Everleigh came back to gifts every time we came back to the room there was a