White abalone shells are magnificent structures. Translucent during the marine snail’s juvenile days, the extremely durable shell increases in opacity as the organism ages, gaining its paint-splatter-esque red, brown and white coloring from the algae it eats.
All seven of the United States’ abalone species that live on the West Coast are listed as Critically Endangered or Endangered according to the International Union for Conservation of Nature, or IUCN, Red List of Threatened Species. This is the first global Red List assessment of the species. The West Coast listings were based on an abalones assessment led by Laura-Rogers Bennett of the California Department of Fish and Wildlife, or CDFW, and University of California, Davis.
The world’s abalone are threatened, endangered or otherwise vulnerable in nearly every corner of the planet. While captive breeding efforts are underway for some species, these giant sea snails are notoriously difficult to spawn. If only we could wave a magic wand to know when abalone are ready to reproduce, without even touching them.
Once abundant, white abalone were critically overfished in the 1970s. With the remaining wild white abalone so far apart from one another that they were unable to reproduce successfully, experts determined that captive breeding and outplanting were the best ways to save the species. After early breeding efforts were hampered by disease, the program headquarters moved to UC Davis Bodega Marine Laboratory in 2011.
UC Davis project scientist Kristin Aquilino directs the Bodega Marine Laboratory's white abalone captive breeding program. In this video, she discusses the work she and her colleagues are doing to bring the endangered species back from the brink of extinction. This week marks the first time captive bred white abalone will be released to the ocean in hopes of saving the species.
A career dedicated to mollusks isn’t always easy. Sometimes progress can occur at a snail’s pace. But a team of scientists are close to reaching a significant milestone in their efforts to bring white abalone — a species of sea snail — back from the brink of extinction.
My job is to write about the wonders and challenges of our coast and oceans, but I’ll admit: Before this story, I had no idea what an abalone looked like...
The California coast once teemed with millions of white abalone. Overfishing, warming oceans and predators devastated the species. Almost all are gone. Now scientists are trying to save this mysterious sea snail.
