Ecology

Holothuria hilla are nocturnal marine invertebrates. During the day, H. hilla are usually observed under coral rubble on the reef crest (Hoareau et al 2008; Lee et al 2008; Dabbagh & Kamrani 2011; Afkhami et al 2012). Occasionally, this species can be found in crevices within coral boulders and only emerging at dusk to feed (based on personal observations). H. hilla has a habit of attaching its posterior half of the body to the interior of the shelter and extending its anterior half out to forage for food on coarse sediments. (Kropp 1982; Foster & Smith 2012).

Figure 2. Highlighted in the circle is part of H. hilla in a crevice under a coral rubble.