Joe meets world's biggest crabs
30 March 2012 Last updated at 07:09 BST
Two of the world's biggest crabs have moved to a sea life centre in the UK.
They're called the Giant Japanese Spider Crab and are known as Crabzilla!
You would normally expect to see them deep in the Pacific Ocean but now you can find two of them in Birmingham.
Their arrival is pretty special as they're the only crabs of their kind in the country.
The crabs are huge but they're not even fully grown yet.
Staff at the sea life centre have had to design a special tank for them to make sure it is big enough.
They can grow up to four meters across and are famous for being the cleaners of the seabed.
Check out the video above to see the crabs getting a grip of Joe.