Here’s Why an Orange Shark Was Discovered in Costa Rica

A remarkable catch has stirred excitement recently: during a 2024 fishing trip close to Tortuguero National Park, Costa Rica, an unusual orange shark was caught and subsequently released. The Marine Biodiversity journal published an article on this unique discovery earlier in the month.

Tourism company Parismina Domus Dei shared pictures of the shark on Facebook in August 2024 with the caption, “The ocean never ceases to amaze us.” They added that they had the privilege of catching this distinctive orange-colored nurse shark – a first for them.

According to the journal, this was the first time an orange nurse shark had been spotted in Costa Rican waters. Normally, nurse sharks are gray-brown, yellow-brown, or brown, with juveniles sometimes having dark spots, as stated by the Shark Research Institute. This unique specimen is marked by a condition called xanthism, which the Marine Biodiversity journal describes as a rare occurrence in marine species and characterized by yellow pigmentation.

In the journal’s description, a shark measuring approximately six and a half feet long was observed with a distinctive “intense yellow-orange coloring and white eyes,” which the journal termed as “albino-xanthochromism.” The article further explained that this is an unusual occurrence in nurse sharks, being the first scientifically confirmed case of total xanthism in the species and the first report from the Caribbean Sea.

The journal expressed intentions to delve deeper into the potential genetic or environmental factors causing the shark’s unique coloration. In the meantime, local fishermen are thrilled about contributing to advancing scientific knowledge.

Parismina Domus Dei shared on Facebook that this discovery not only emphasizes the natural abundance of Caribbean waters near Limon Barra de Parismina but also paves the way for further studies on the biodiversity of Costa Rican Caribbean waters. For animal enthusiasts, there’s more interesting content ahead about celebrity pets.

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2025-08-27 20:47