Read this passage from a story.

‘You can touch the crabs, but only on their bodies. Don’t touch their claws,’ said the aquarium worker. ‘Pay attention because crabs can move fast.’

Brooke was a little nervous. She didn’t want to get pinched by the crab’s hard claws. She reached down and gently touched the crab’s shell. The crab didn’t seem to mind. Suddenly Carl screamed, ‘Look out!’

Brooke looked up at Carl, surprised. Brooke’s hand was still in the tank.