Do you believe in UFOs or mermaids?  Have you ever seen an alien being or a mysterious beast?

Tonight on Connect The World we're exploring the weird, the supernatural, and the downright fishy.  A town in Israel is offering a reward of $1 million to anyone who can prove there's a mermaid in the Med, after several reported sightings.

Meanwhile, strange lights seen in British woods in the 1980s, reported as a UFO sighting and known by sci-fi enthusiasts as "The Rendelsham incident," turns out very likely to have been a prank, according to classified documents just release by the Ministry of Defence.

On Connect the World we'll explore both stories and ask why, despite the lack of evidence, we still believe in the existence of supernatural beings, whether out there in space, or deep under the waves.

Your thoughts and comments below, please, or e-mail us on ConnectTheWorld@CNN.com