Trivia

Hard

The Only Warm Blooded Fish In The World Is The?

Humpback Whale
Opah
Bluefin Tuna
Lamprey Eel

Answer: Opah

Outside of the mammals found in the sea like whales, warm blooded animals are quite rare. Prior to 2015, it was believed that no fish were fully warm blooded and the only examples of any sort of warm blooded mechanisms in any fish species were limited to some species of tuna and sharks that had what scientists call “regional endothermy” or warm-bloodedness limited to parts of the animal’s body core.

In the spring of 2015, however, researchers discovered that the Opah (also known as a spotted moonfish, cravo, kingfish, and Jerusalem haddock) had a complex system of blood vessels connected to the gills and fins that acted like a sort of radiator wherein heat could be exchanged throughout the entire body. By efficiently exchanging heat as well as introducing additional heat via movement of the fins, the Opah is able to hunt in deeper and colder waters where similar fish in the food chain would have trouble maintaining speed and agility (let alone surviving).

Trivia

Hard

The Only Building On The National Historic Landmark Registry Outside Of The U.S. Is Located In?

Trivia

Hard

The Only Mobile National Landmark In The United States Is Located Where?

Trivia

Easy

Hawking Radiation Is Emitted By What?

Trivia

Easy

Until The 1970s, X-Ray Machines Were Used For Which Of These Decidedly Non-Medical Uses?

Trivia

Hard

On the Pacific Island of Yap Citizens Used What Unconventional Item as Currency?

Trivia

Easy

Which Computer Is The Best Selling Personal Computer Of All Time?

Trivia

Hard

What Brand Of Cigarettes Did The X-Files’ Smoking Man Smoke?

Trivia

Easy

What Appears In Every Single Scene Of The Movie Fight Club?

Trivia

Hard

During The Japanese Nakizumo Festival Sumo Wrestlers Attempt To?

Trivia

Hard

The World’s First Hybrid Electric Vehicle Was Produced By?