
A diver collects a long-spined sea urchin. Credit: Blake Gardner
Our employee owners were recently part of a team of detectives on a mission to discover the killer of long-spined sea urchins, Diadema antillarumy, throughout the Caribbean Sea. The infected urchins lose their spines, leaving them more vulnerable to predation or dying after a few days. In 1983 the same species experienced mass mortality with identical symptoms, but scientists were unable to discover the culprit. Forty years later, the issue resurfaced, and a team of scientists joined forces to unlock the mystery.
CSS employee owners, supporting NOAA’s Coral Reef Conservation Program and NOAA’s Office for Coastal Management, joined a team of scientists in diving to collect urchin samples at 23 sites around the Caribbean Sea. By providing the samples, the researchers were then able to examine and test the urchins and compare them to healthy urchins to determine the cause of the mortality.
Due to this rapid response, scientists determined the cause of the issue within three months
Our staff coauthored this paper documenting the process. https://www.science.org/doi/10.1126/sciadv.adg3200

Researchers examine a long-spined sea urchin. Credit: Leslie Henderson
See More CSS Insights
Organizing National Mussel Watch Program Sample Collection Missions
Established in 1986, NOAA’s National Mussel Watch Program has been systematically monitoring nearly 600 chemical contaminants (including legacy organic contaminants, trace metals, and contaminants of emerging concern) and biological indicators for the establishment of baseline contamination levels in coastal waters around the U.S., including the Great Lakes, Puerto Rico, and U.S. Virgin Islands. CSS employee…
Supporting Guam’s Chemical Round Up
Senior chemist working on the CSS contract with the Environmental Protection Agency’s (EPA) Superfund Technical Assessment and Response Team (START) supported the Guam Lab Chemicals Round Up in March of 2024 and July of 2025. During both mobilizations, START supported EPA’s mission to collect chemical waste items from across the U.S. island territory of Guam for off-island transport and disposal. As a field chemist, CSS employee…
Contributing to an Award-Winning Newsletter
Congratulations to the communications team at the National Oceanic and Atmospheric Administration’s (NOAA) Office for Coastal Management on their award-winning publication, Coastal Communicators. As part of a subcontract with Lynker, our communication staff contribute to this monthly publication to help share tips, lessons learned, and best practices with other communicators and coastal programs who don’t…
