HeliocidarisHeliocidaris is a genus of sea urchins, part of the family Echinometridae.CharacteristicsThis genus is typical of west Pacific Ocean, in particular in Australia. Some species are edible.List of speciesThis genus contains 6 extant species and 1 fossil :Heliocidaris australiae Heliocidaris bajulus Heliocidaris crassispina Heliocidaris erythrogramma Heliocidaris ludbrookae Philip, 1965 †Heliocidaris robertsi Lindley, 2004''Heliocidaris tuberculata''