Figure 2.

Map of the Cape Gris-Nez intertidal rock pool showing the locations of the 71 male (triangles) and the 70 female (circles) gametophyte individuals sampled within the population (the tetrasporophyte individuals are not shown). Mating success (i.e. the numbers of sexual partners) is proportional to filled symbol size. Females with missing information that were not included in Bateman analyses are indicated with open circles. The rock pool edges are shown in grey. The polygons within the rock pool indicate the presence of rocks.