The Eye Balls in the Sky

At the seaside, all the children are enjoying the water but Boot decides to investigate some rock pools instead and finds some crabs. From the crabs prospective, what they see is "eye balls in the sky" a sight that disturbs some of them greatly. Are the eyes there or not the crabs wonder. They set up a telescope to view the world beyond the pool, which Boot recognises is made from old tin cans. He barks into the cans causing mass panic in the crab colony. Boots looks at the excitable creatures and thinks that its just as well the crabs didn't know anyone was watching.