Lobsters book 1 and 2: Rampage and Moon

Then he saw a dark shape moving along the beach, and then more noise as something else came out of the sea, and sprayed sea water onto the sand. Two dark shapes and then a third and a fourth. Soon he could make out six dark shapes. They looked like crabs; no they were longer than crabs. They were as tall as a horse and as long as a double Decker bus. One was bigger than the rest, and Jim saw it raise its claws, click, click, click, click it went. Old Jim would have whistled even in the darkness, he knew what the shapes were, and they were big oh god! They were big. He looked up at the full moon as the clouds broke around it; he had read somewhere that the moon controlled crabs movements. He wondered if it was the same for these beasts."My babies oh yes you are my babies." Jim giggled to himself as the shapes moved off along the edge of the beach, keeping close to the sea line.