Fig. 7
From: In situ behavioral responses of crustacean zooplankton to an approaching seismic survey
Zooplankton Cage. The cages were constructed using 12 aluminum L-profiles, each measuring 40 cm in length and 3 mm in thickness, welded together to form a cubic structure. The lid and bottom were made from 40 × 40 cm, 3 mm thick aluminum plates, each with 9 holes for threaded pieces and PVC pipes that could be sealed with caps from the outside (bottom and lid). Eye bolts were used on all four corners of the top and bottom to deploy the cage with ropes/buoys/weights. The cage was enclosed with a 100 μm mesh net. Cameras were mounted onto custom-designed 3D-printed camera mounts, attached to a T-rail between two PVC pipes, allowing flexible positioning. On the opposite side of the camera setup (inside the cage)—position indicated with a black star—diving lights and a black background were positioned to provide contrast and illumination for observing copepod behavior. Visualization by Anika Kühn.
