Even today, we know very little about the giant phantom jelly. Historically, scientists relied on trawl nets to study deep-sea animals, and while such nets can be effective for studying hardy animals such as squids, crustaceans, or fish, jellies turn into a gelatinous goo in them. The cameras on MBARI’s ROVs, on the other hand, have allowed researchers to study these animals intact in their natural environment. High-definition footage of the giant phantom jelly capture stunning details about the animal’s appearance and behaviors that scientists would not have been able to see with a trawl-caught specimen.