Dear Marmamers, on behalf of my coauthors, I am very pleased to announce the publication of a short note on the first record of the Clymene dolphin in Costa Rican waters. The pdf is freely available at the website of the LAJAM journal at: View of First record of the Clymene dolphin (Stenella clymene Gray, 1850) in Costa Rican waters | | | | View of First record of the Clymene dolphin (Stenella clymene Gray, 1850... | | | Brief summary (not available in the note) First record of the Clymene dolphin (Stenella clymene Gray, 1850) in Costa Rican watersJaime Bolaños-Jiménez, Gilberto Borges-Guzmán, and Gabriela Hernández-Mora On 02 November 2022, a dead dolphin was found floating in Costa Rican waters approximately 45 km from Tortuguero Hill (approx. 10°48’N, 83°00’W) by the crew of a sport fishing boat who sent the pictures to one of the authors (GBG). The dolphin was identified as a Clymene dolphin based on diagnostic characteristics visible in the photographs that included 1) a three-part color pattern including a dark gray cape, light gray sides, and white belly; 2) a cape that dips above the eyes and below the dorsal fin; 3) dark “mustache” marking on the middle of the top of the beak; and 4) dark stripe on the top of the beak running from the tip to the apex of the melon. The present record adds one species to the current inventory of the cetacean fauna of Costa Rica, increasing the number of confirmed species to ten. We emphasize the importance of educating the public about marine conservation and the contribution of citizen science initiatives to advance the knowledge of marine biodiversity, as in this case, where the support of citizen science was critical to provide the pieces of evidence for the description of this Clymene dolphin.