M. G. Harasewych is an Emeritus Curator of the Department of Invertebrate Zoology at the Smithsonian Institution in Washington D.C., which houses one of the world's largest mollusk collections. He has discovered a variety of new species and written widely for journals and periodicals, and authored the bestseller Shells: Jewels from the Sea in 1989.
Fabio Moretzsohn is Visiting Assistant Professor of Invertebrate Zoology and Biology, Department of Life Sciences, Texas A&M University-Corpus Christi. He is one of the authors of the Encyclopedia of Texas Seashells.