Hi everyone!  Today I spent the day with my friends on the boat you see in the video.  It is called a narrow boat.  It travels on canals in England.  It can't go in the ocean or even on a lake - only down these canals that are like small rivers.  In the video you see the boat in a lock.  The lock is when boat is locked between two gates.  When it is between two gates, water can be let in or out to raise the boat or lower it to the next level in the canal.  Here you see the gate being opened so the boat can get out and continue on its way.  The woman is winding down a paddle which stops water coming in the lock when the door is closed.

Have you ever been on a boat?  There are so many different kinds.  Can you name some?

Thailand cave rescue: Rescuers weigh boys' escape options

Rescuers are considering how best to bring to safety a group of boys trapped in a flooded cave network in Thailand.

The 12 boys and their football coach were found alive on Monday and have received medical treatment and food.

Divers reached them nine days after they entered the caves in the north of the country and became trapped by rising waters caused by heavy rainfall.

Earlier, the Thai military said the boys would need to learn to dive - or wait months for flooding to recede before they could get out of the caves.

Food would need to be sent in for the next four months if the scuba-diving option was ruled out, the military added.

It is believed that most of the group cannot swim, complicating what would already be a difficult rescue.