'The strange creature has been identified as a Pyrosome, a bioluminescent mass made up of hundreds of thousands of organisms that feed on plankton.
Pyrosomes are actually colonies made up of individual pyrosome clones that can grow up to 60 feet in length, according to LiveScience.
“Pyrosome colonies are shaped like long bells, open at one end,” LiveScience says. “The open end, through which the colony expels its filtered water, can be as large as 6 feet (1.8 m) in diameter — large enough for a human to fit inside it.”
The elusive organisms are sometimes referred to as the unicorns of the sea.'