Abstract: Preface. The edible sea-urchins (J.M. Lawrence). Reproduction of sea urchins (C.W. Walker, T. Unuma, N.A. McGinn, L.M. Harrington, M.P. Lesser). Energy metabolism and gonad development (A.G. Marsh, S.A. Watts). Reproductive endocrinology of sea urchins (K.M. Wasson, S.A. Watts). Echinoid larval ecology (L.R. McEdward, B.G. Miner). Growth and survival of post-settlement sea urchins (T.A. Ebert). Digestion in sea urchins (J.M. Lawrence, T.S. Klinger). Carotenoids in sea urchins (T. Matsuno, M. Tsushima). Disease in edible sea urchins (K. Tajima, J.M. Lawrence). The ecology of Centrostephanus rodgersii (N. Andrew, M. Byrne). The ecology of Loxechinus albus (J. Vasquez). The ecology of Paracentrotus lividus (C.-F. Boudouresque, M. Verlaque). The ecology of Psammechinus miliaris (M. Kelly, E. Cook). The ecology of Echinometra (T.R. McClanahan, N.A. Muthiga). The ecology of Evechinus chloroticus (M.F. Barker). The ecology of Heliocidaris erythrogramma (J. Keesing). The ecology of Strongylocentrotus droebachiensis (R.E. Scheibling, B.G. Hatcher). The ecology of Strongylocentrotus franciscanus and Strongylocentrotus purpuratus (M.J. Tegner). The ecology of Strongylocentrotus intermedius (Y. Agatsuma). The ecology of Strongylocentrotus nudus (Y. Agatsuma). The ecology of Lytechinus variegatus (S.A. Watts, J.B. McClintock, J.M. Lawrence). The ecology of Tripneustes (J.M. Lawrence, Y. Agatsuma). Sea-urchin roe cuisine (J.M. Lawrence).