Abstract: A device for containing live aquatic animals, e.g., lobsters, fish, etc., after they have been caught comprises a open mesh bag clamped or tied to a tubular member behind its entrance opening. A flexible flap is cantilevered to the tubular member and structured so that its free end extends fully across the exit end of the tubular member. When an animal is caught, it is shoved into the tubular member flexing the flap and passing into the attached bag whereupon the flap snaps back over the exit end to prevent escape of the contained animal. The bag may have closeable end or side openings for removing animals therefrom and/or flexible, transparent panels to permit the contents of the bag to be viewed.