Strange low-frequency sound heard by NOAA in 1997 - Everyday Puzzles

Here are all the answers for the "Strange low-frequency sound heard by NOAA in 1997" question from the popular Everyday Puzzles game! Developed by Fanatee Games, this engaging game often presents tricky puzzles, and if you’re here, you might be stuck on this particular crossword. Don’t worry - we’ve got you covered with the solutions to all Everyday Puzzles levels! Increase your vocabulary and general knowledge. Become a master crossword solver while having tons of fun, and all for free!