Divers taking part in a routine survey spotted a lobster cleaning out its burrow on the seabed and to their surprise the animal was throwing out dozens of pieces of worked flint.

• 潜水人员在一次例行勘测时；恰巧看到海床上有一只龙虾正在清理它的洞穴；让这些潜水人员感到吃惊的是这只动物清出了许多加工过的燧石.