His airplane vanished behind the clouds.

I found a rare snake tail (brittle star) in this sea.

Gathering clouds are forming in the sky, it looks like it's going to rain.

He was diagnosed with a problem in the arachnoid of his brain.

I found a spider starfish on the sea floor.

His figure disappeared as if it had vanished into thin air like a cloud.

You can find a brittle star on the sea floor.

The top of the mountain was covered in cloud and mist.

He was reading a true account of the incident.

There's a little chance that he will win the match.