Fig. 4

Concentrations of metallic trace elements (Al, As, Ca, Cr, Cu, Fe, Mn, S, V and Zn) in ppm in: Dictyota dictyota; Thalassia stipulacea; Halophila filiforme and Lytchinus variegatus during 2021 (circle) and 2022 (triangle), near (green) and far (purple) from Sargassum accumulation in the three sites (BT, CA and CE).