The squid worm feeds on plankton, uses bristles to swim, and has pseudo-arms on its head which are primarily used for sensory function. The squid worm can grow to lengths of up to 9 cm. The squid worm resides in the depths of the ocean and has been found as deep as 6,200 meters in the Celebes Sea. Even the marine scientists responsible for the discovery were very surprised by the appearance of the squid worm.
Perhaps the most perplexing thing about this organism is the fact that it is so common. This worm appears to be very abundant at the depths. This speaks volumes about our knowledge of the creatures that reside in deep marine ecosystems. With recent findings of creatures that are common and incredibly large creatures that would seem impossible to miss such as the giant squid, our knowledge of what exists on our own planet seems limited.
The hadal zone of the ocean, named after Hades in Greek mythology, begins at about 6,000 meters - well within the range of the squid worm - and continues to the point where life no longer exists in the depths of the sediments. Currently, there is enough unexplored space in the hadal zone to equal roughly the size of Australia. This seems absurd considering our exploration of the moon and the heights of the earth such as Mount Everest.
The ocean should not remain an enigma for very much longer. Advances in technology allows for scientists and unmanned vessels to explore the depths much more readily. James Cameron recently completed a voyage to the depths of the Marianas Trench, the deepest solo dive on record, and there is a current expedition exploring the Kermadec Trench which is one of the deepest and coldest trenches in the world. The outlook for future exploration is bright. The depths are predicted to contain diversity matching that of the coral reefs. One thing is certain, in the near future we will have a much better knowledge of the deep.