The orange shark documented off Costa Rica was a nurse shark (Ginglymostoma cirratum), not a new species. A 2025 scientific paper describes its broad yellow-orange pigmentation as total xanthism and its white eyes as part of an albino-xanthochromism phenotype. The precise cause remains unknown, and the shark’s fate after its reported release in 2024 has not been confirmed.
Where the orange nurse shark was found
Sport fishers encountered the adult shark near Tortuguero National Park in Costa Rican waters. The 2025 paper by Marioxis Macías-Cuyare, Gilberto Rafael Borges Guzmán, and Daniel Arauz-Naranjo reports that the shark was approximately 200 centimeters (about 6.6 feet) long, at a depth of 37 meters (about 121 feet), in water measuring 31.2 °C. These are measurements reported for this individual encounter, not population statistics.
The shark was photographed and released alive in 2024, according to secondary reporting. No later confirmed sighting or long-term monitoring is documented in the available reporting, so its present fate is unknown.
Why was the shark orange?
The 2025 paper describes the shark’s broad, intense yellow-orange pigmentation as total xanthism. The authors also describe its phenotype as albino-xanthochromism, noting its white eyes. The exact genetic or environmental mechanism has not been established.
#1 Best Overall
- Marine Life Wall Art: Unframed prints in 8x10 & 12x16 inches, easy to pair with frames for home and classroom decor
- Ocean Animal Prints: This 6‑piece collection showcases turtles, sharks, seashells, whales and crabs in vintage watercolor style, with labeled illustrations for educational fun
- Educational Nautical Decor: Ideal for kids’ bedrooms, playrooms, classrooms and coastal‑themed spaces, sparking curiosity about sea creatures while delivering charming vibes
- Vintage Sea Life Art: Thoughtful pick for marine‑life fans and teachers, great for housewarmings, birthdays and holiday gifting for ocean‑wildlife enthusiasts
- After Sales Service: Email us with any questions about this marine life wall art, we will respond quickly
| Observed feature | How the paper describes it | What is not established |
|---|---|---|
| Broad yellow-orange body coloration | Total xanthism | The specific cause of the pigmentation |
| White eyes | Part of the albino-xanthochromism description | A genetically or laboratory-confirmed diagnosis of albinism |
The authors say further research is needed to explore potential genetic or environmental factors influencing this rare pigmentation anomaly. The animal’s appearance does not prove that a particular mutation, diet, pollution, or water temperature caused its coloration.
What was genuinely first-of-its-kind?
The paper documents the first scientifically recorded case of total xanthism in a nurse shark and the first record of the condition from the Caribbean Sea. This is a record of an unusual phenotype in an identified species, not the discovery of a new species or proof that this was the first orange shark ever seen.
Rank #2
- Marine Life Wall Art: Unframed prints in 8x10 & 12x16 inches, easy to pair with frames for home and classroom decor
- Ocean Animal Prints: This 6‑piece collection showcases turtles, sharks, seashells, whales and crabs in vintage watercolor style, with labeled illustrations for educational fun
- Educational Nautical Decor: Ideal for kids’ bedrooms, playrooms, classrooms and coastal‑themed spaces, sparking curiosity about sea creatures while delivering charming vibes
- Vintage Sea Life Art: Thoughtful pick for marine‑life fans and teachers, great for housewarmings, birthdays and holiday gifting for ocean‑wildlife enthusiasts
- After Sales Service: Email us with any questions about this marine life wall art, we will respond quickly
Nurse sharks are a recognized species. For general shark identification, readers may consult Sharks of the World by Compagno, Dando, and Fowler (2005), listed among the paper’s references. It is a general shark reference, not a guide to this individual or the 2025 pigmentation finding.
What does the observation say about survival?
The paper says the finding suggests xanthism does not hinder survival in this species. That is an inference from one adult-sized shark, not proof that conspicuous coloration has no survival cost or is harmless for all unusually pigmented nurse sharks.
Rank #3
- Complete Package: the package content contains 2 pieces of wall decor with a size of about 15.7 x 23.6 inches/ 39 x 60 cm, the suitable size can support your daily use and hanging needs, you can also share them with your friends
- Trustful Materials: the vintage poster is mainly made up of quality artistic cloth and black plastic scrolls, which are clear and bright in patterns, smooth, waterproof and lightweight, you can use them for a long time with confidence
- Vintage and Interesting Design: the ocean fish art decor prints with a wide range of different marine animal in various kinds, vibrant in colors, with name notes underneath for a fun and interesting design that gives you a vintage feel
- Easy for You to Use: this picture is pre assembled, and no additional installation tools are required, you just need to unroll the reels and choose your preferred position to hang them directly, which is easy to operate
- Use Method: this wall decor can be applied to decorate many places, including nurseries, walls, cupboards, backyards, windowsills, balconies, dormitories, schools, classrooms, corridors, dining rooms, libraries, hotels and more, which can be more attractive and eye catching
A secondary report attributes a comment about the shark’s apparent health and maturity to Nick Whitney, a New England Aquarium senior scientist specializing in nurse sharks. That report says the quote was originally attributed to NPR; it was not a direct interview conducted for this article.
What scientists can—and cannot—conclude
The scientific record documents an adult nurse shark with intense yellow-orange pigmentation and white eyes near Tortuguero National Park. It does not establish the precise mechanism behind the pigmentation, how common the trait is among nurse sharks, or what happened to this shark after its release.
Rank #4
- Stunning Ocean Wildlife Art: Features 4 captivating posters of sea turtles, otters, manta rays, and vibrant underwater scenes, bringing the beauty of the ocean into your home.
- Vivid Colors & High Detail: Printed on high-quality paper, each art print showcases bright, lifelike colors and intricate details for an immersive underwater feel.
- Perfect Size for Display: Each 16x20 inch poster makes a bold statement, perfect for living rooms, bathrooms, or kids’ rooms with an ocean or aquatic theme.
- Easy to Frame: Designed to fit standard frames (not included), allowing for easy customization and seamless integration into your decor.
- Ideal Gift for Ocean Lovers: A great gift for marine life enthusiasts, scuba divers, or anyone who appreciates the tranquility and beauty of the sea. Perfect for birthdays, holidays, or housewarmings!
The authors of the 2025 short communication state: “Further research is needed to explore potential genetic or environmental factors influencing this rare pigmentation anomaly in sharks.”
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why this observation matters
Not every notable animal record involves a new species. This observation documents an unusual appearance in a known species and adds a rare pigmentation record from the Caribbean Sea. It also shows how photographs and encounter details can contribute to scientific records when an animal is released.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Best Value
- Features an adorable sea otter and its baby, perfect for animal lovers.
- Made with vibrant colors and clear details for a beautiful look.
- Measures 16x20 inches, ideal for any wall space in your home.
- A wonderful present for kids, nature enthusiasts, or anyone who loves ocean life.
- Lightweight and easy to frame, making it simple to add charm to your decor.
The most accurate description is that this was a nurse shark with total xanthism and white eyes, described in the paper as an albino-xanthochromism phenotype. The cause and the individual’s later fate remain unknown.
FAQ
Was the orange shark a new species?
No. It was identified as a nurse shark, Ginglymostoma cirratum. The unusual feature was its pigmentation, not its species identity.
What is xanthism?
In this record, total xanthism describes the shark’s broad yellow-orange pigmentation. The paper does not establish the precise mechanism that caused it.
Did the shark definitely have albinism?
The paper describes the shark’s phenotype as albino-xanthochromism and notes its white eyes. The available evidence does not establish a genetic or laboratory-confirmed diagnosis of albinism.
Recommended Free Tools
Where was the orange nurse shark found?
It was encountered near Tortuguero National Park in Costa Rican waters. The 2025 paper reports a depth of 37 meters and water temperature of 31.2 °C.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
