The Missing Rumbleometer

Fortunately, a seafloor monitoring instrument, called a rumbleometer was already at Axial Volcano during the earthquakes and will provide important clues. But another ship was just out at the site and was not able to recover the rumbleometer. They could communicate with it on the bottom, so they know it is still on the seafloor, but they could not make it release and return to the surface. Why didn't it return? Is it stuck on the bottom somehow?

We really want to get the rumbleometer back because it likely recorded information on what the volcano was doing and will help us understand what happened during the earthquakes. We know where the rumbleometer is on the bottom, but you need to go out to Axial and find out why the rumbleometer did not come up. Then you need to recover it and look at the data it recorded to figure out what happened at Axial during the earthquakes. A research ship with a remotely operated vehicle are standing by ...