Track the world's largest octopus

Dr. David Scheel, a researcher from Alaska Pacific University in the US, and his colleagues followed the octopus Enteroctopus dofleini, the world's largest size octopus. Before that, they had installed a sound transmitter on the Enteroctopus dofleini octopus body.

Enteroctopus dofleini octopus is found in the waters of the northern Pacific Ocean, including the waters of the US state of Alaska.

In the past, attaching electronic devices to octopus and other mollusks is difficult for scientists, because people can only attach devices to hard parts.

But Scheel's team found a solution. They attached a sound generator to the octopus's skin.

After attaching transmitters to 40 octopus bodies, the research team dropped them into the water and used underwater players to monitor them.

The 20-day follow-up results showed that the range of dofleini Enteroctopus octopus activity was greater than the scientific prediction. They lie motionless or hide their enemies for 94% of the day.

The team also found that the world's largest octopus species used seabed topography to navigate. They remember fixed objects on the sea floor to find their way back to the cave.