If these giant sheets of ice crack and then melt that could be bad for rising sea levels. They're not, however, to blame for the sinking of the Titanic in 1912. They can look blue rather than white, and have quite intricate structures inside.

I come from a bull or a steer. You can buy a dried version of me at the pet store as a chew toy for your dog.

I went to a seafood disco last night. Woke up this morning and realised I'd pulled a ........?

I paint the western sky in gold and rose, Yet leave no brush upon the cooling air. I bring the weary daylight to a close, And summon shadows from their quiet lair. I drown the brightest fire in the sea, To let the silent silver stars go free.

One helps capture a smile, another lights up the stormy skies.