Home›Echinoderms›Activity PatternBrowse ByActivity PatternFactsActivity PatternSourcesComments (0)Reader Challenges (0)FactsComparisonReproductive ModeWell-attestedOviparous (Egg-Laying) 1Activity PatternNocturnalActivity Pattern2 entriesSources1. Wikipedia: Echinodermtier 2WikipediaEchinoderm, Reproduction sectionQuote, Echinoderm, Reproduction sectionThe eggs and sperm cells are typically released into open water, where fertilisation takes place.View the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.