A Majestic and Mysterious Visitor
The remarkable fish, known commonly as the opah or king fish (scientific name: Lampris guttatus), was discovered on the beach in excellent condition. According to Tiffany Boothe, a manager at the Seaside Aquarium, this well-preserved specimen suggests that it was close to shore when it died—much to the surprise of everyone who found it.
An Unexpected Find in Oregon Waters
What has piqued the curiosity of scientists isn’t just the opah’s impressive size, but also its presence so far north. As reported by The Washington Post on July 18, 2021, this species usually sticks to much warmer waters than those off the Oregon coast. The French Research Institute for Exploitation of the Sea (Ifremer) notes that the opah is normally a guest in tropical and warm temperate seas:
“It is increasingly encountered in the western Mediterranean,”
the institute adds.
Across the Atlantic, the National Museum of Natural History in Paris confirms that the opah can be found in the waters off metropolitan France, as well as near Mayotte, French Polynesia, and Réunion. In the United States, the National Oceanic and Atmospheric Administration (NOAA) says it typically swims off several East Coast regions, and especially around Pacific territories such as Hawaii.
Catching an opah in Oregon isn’t completely unprecedented—a specimen was caught here back in 2009, as reported by The Oregonian. However, Heidi Dewar, a NOAA biologist, emphasizes how rare these occurrences remain.
Why Here, Why Now?
Specialists are scratching their heads when it comes to explaining exactly why this opah showed up in the cool Pacific waters of northwest Oregon. According to some, climate change might be at play, gradually altering marine species’ usual migration patterns and inviting rare guests to new shores.
Still So Much We Don’t Know
Part of the fascination with this species comes from just how little we actually know about it. As one expert puts it:
“Very little research has been conducted on the ecology or basic biology of the opah.”
NOAA even notes that there are no reliable estimates of the opah’s total global population—it remains one of the ocean’s ongoing mysteries.
In 2015, several American scientists published a study in Science focusing on the opah, drawing data from specimens caught off the coast of California. This research revealed a surprising fact: the opah is a warm-blooded fish, the first of its kind identified by researchers. “Generally, a fish’s body temperature matches the water around it,” the scientists explained. However, the opah’s average body temperature is about 41°F (5°C) warmer than its surroundings. Talk about a fish with a warm personality!
And what will become of the Seaside specimen? For now, it’s been frozen, preserved so future generations can study it further. When the local children return to school, this fascinating fish may well be dissected for scientific purposes—a rather memorable biology lesson, as announced by the aquarium on Facebook.
John is a curious mind who loves to write about diverse topics. Passionate about sharing his thoughts and perspectives, he enjoys sparking conversations and encouraging discovery. For him, every subject is an invitation to discuss and learn.
