A mysteriously bright anomaly winked in and out of existence on the seas of Saturn’s largest moon, Titan — potentially the first time waves, bubbles or some other unknown features have been seen there, scientists say.

Scientists usually call this spot a “transient feature,” but the researchers have playfully dubbed it “Magic Island.” Titan, the largest of Saturn’s 62 known moons, is 50 percent wider than Earth’s moon and 80 percent more massive. You can watch a video about the “Magic Island” on Space.com.

Read more about the Magic Island here.