US and Philippine scientists probing the deep Celebes Sea discovered some new and pretty unusual marine species.

One was a sea cucumber that is nearly transparent which could swim by bending its elongated body. Another was a black jellyfish found near the sea floor.

The most striking creature found was a spiny orange-colored worm that had 10 tentacles like a squid, Madin said. "We don’t know what it is … it might be something new," he said.