A trigger for a marine animal trap is preferably constructed from two identical, or nearly identical, parts. The two parts are substantially flat as manufactured, and are constructed to have connector sections that fold without breaking away from each substantially flat part. The connector sections overlap and secure to one another, preferably with integral connection facilitators on each connector section. Fingers from each substantially flat part converge towards one another when the connector sections are secured together. Optional excluder bars may be included on each substantially flat part, and may be bent towards one another and secured together.
