Marine invertebrates exhibit a dazzling array of interesting ways of sexual reproduction, some of which is shown here.
Thanks to Aaron Baldwin (Alaska Department of Fish and Game) and Drs. Ginny Eckert (University of Alaska Fairbanks), and Sherry Tamone (University of Alaska Southeast) for their detailed knowledge, freely shared, to Dr. Rich Palmer (University of Alberta) for contributing the barnacle photos, and to Annette Smith, who suggested the idea for this feature.
Editor’s Note: This article has been updated to reflect the fact that Aaron Baldwin has not received a doctorate degree.