FIGURE 2 in Notes on a small collection of thecate hydroids (Cnidaria: Hydrozoa) from Tristan da Cunha, south Atlantic

FIGURE 2. Typical habitats for hydroids on Tristan de Cunha. A and E: Dense Aglaophenia parvula Bale, 1882 tufts growing on wave-surged reef crest with sponges and colonial anemones. B: Silicularia rosea Meyen, 1834 and Obelia geniculata (Linnaeus, 1758) on Macrocystis pyrifera fronds. C: Antenella quadriaurita Ritchie, 1909 on vertical rock face with bryozoans, sponges and ascidians. D: Sertularella gayi (Lamouroux, 1821) and smaller hydroids growing on bedrock at 30 m. Photo courtesy of Sue Scott (A, B, C, and E) and Paul Tyler (D).