Then he covered it with the large shell provided.

Then there was a bigger bang, and a larger shell came flying.

It had been decorated with a large shell at the front.

The large shell is white and has an elongate-conic shape.

They look like spears with large shells on the ends.

This species has a large black and white shell.

The larger, curved shell sat within the mud on the sea floor.

Males must be larger and more powerful in order to collect the largest shells.

In other words, the male's ability to collect large shells depends on his size.

Its roof was the largest concrete shell in the world at that time.