A transportable device for colonizing and harvesting invertebrate animals in proximity to a floor of a body of water includes at least two quadrangular frames, each of which include a trapping surface. A central hinge is disposed between opposing, inner traverse sides of the at least two quadrangular frames and has a first one-way folding direction. Two secondary hinges are disposed on opposite sides of the central hinge, each of the secondary hinges having a second one-way folding direction that is opposite to the first one-way folding direction such that the at least two quadrangular frames have an opening angle with respect to each other that is adaptable to a structure the floor of the body of water.
