This block is stuffed full of belemnites. Look closely and you’ll see the radiating needles of calcite crystal that preserve the solid shell (the guard).
Belemnites are probably the most common fossils found on the beaches, especially around Charmouth. When the animal was alive, the pencil or bullet-shaped shell was surrounded by a soft body, and the creature looked very like a squid.
Find out more on the molluscs page.