Giant ghostly jellyfish caught on film

Scientists have spotted an unusual sea creature - resembling a ghost in the murky depths of the ocean near Argentina – a giant phantom jellyfish.

The jellyfish's scientific name is Stygiomedusa gigantea, but its nickname comes from how it looks.

It is pale pink and floats slowly through the dark sea like a ghost.

Researchers from the Schmidt Ocean Institute filmed it about 250 metres below the surface of the ocean.

Some have been known to grow as long as a school bus with four long, ribbon-like arms that can grow up to 10 metres.

This jellyfish is truly enormous and, unlike many others, this one does not have stinging tentacles.

Instead, it uses its long arms to gently grab food such as tiny floating animals called plankton and small fish.

The jellyfish was filmed during a long journey exploring the deep sea all along the Argentine coast.

While exploring, the scientists also found 28 possible new species of sea life.

These included worms, corals, sea urchins, sea snails and sea anemones – animals that look like plants but are actually related to jellyfish.