The discovery of a blue octopus about the size of a golf ball has delighted marine biologists and the public with its rarity – and its big-eyed cute factor. The octopus was found 5,800 feet deep in the eastern Pacific Ocean by a remotely operated submersible near the Galápagos Islands off the coast of Ecuador.

Scientists have announced the discovery of a previously unidentified species of octopus found in the Galápagos Islands — and it’s sure to turn heads.

Found off the coast of Ecuador in the Galápagos Islands, the tiny blue octopus — given the official name of Microeledone galapagensis — was officially introduced to the world this month in a published...