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. 2020 Jul 31;15(7):e0236579. doi: 10.1371/journal.pone.0236579

Fig 3. Eulittoral test system.

Fig 3

Top left: cross section through bin containing beach sand and samples. (1) wire barbs to deter birds, (2) 60-L plastic bin, (3) sand from a local beach, (4) test item frame, (5) fine mesh (280 μm), (6) coarse mesh (1000 μm), (7) perforations in bottom of the bin, (8) equilibration pipe, (9) fine mesh (280 μm) on the top of the pipe to allow for seawater outflow at high tide. Top center: 3 specimens in the test bin before covering with an additional layer of sand. Top right: test bin at high tide. Bottom left: wooden rack with 5 test bins at midwater. Bottom center: wooden rack with test bins at lower tide. Bottom right: schematic illustration of the eulittoral test system. (1) wooden posts, (2) wooden plank to support the bins, (3) metal chain to adjust the plank, (4) test bin, (5) high water level, (6) mid-water line, (7) low water level.