Bigfin squids live in oceans many thousands of feet below the surface of the water.
The scientists wrote in their study: “One of the most remarkable groups of deep-sea squids is the Magnapinnidae, known for their large fins and strikingly long arm and tentacle filaments.
“Little is known of their biology and ecology as most specimens are damaged and juvenile, and in-situ sightings are sparse, numbering around a dozen globally.”
Deborah Osterhage, a CSIRO scientist who took part in both voyages, said: “They’re quite a distinctive squid, so when you see them, you know you’ve really seen them and the fact they aren’t seen very often is what makes them so appealing. They almost seem otherworldly.”