Deep Sea Dreads 🌊 on Instagram: "The "Bloop" is an ultra-low frequency sound that was detected by underwater microphones in the Pacific Ocean in 1997. It was so loud that it was heard over 3,000 miles away! Initially, it was mysterious, with some speculating it could be from a giant sea creature, but later research revealed it was likely caused by the rapid freezing of gas bubbles from ice quakes. Still, the Bloop remains one of the most intriguing oceanic sounds ever recorded! Follow @deepsead