Tide was low when they started. They had nearly three miles to walk. The pools in front of Deal and Walmer had often been searched, but they hoped that once round the Foreland they might light upon specimens differing from any which they had hitherto found. For some hours they searched the pools, retiring as the tide advanced. Then they went up to the foot of the cliffs, and sat down to open their cans and compare the treasures they had collected. The spot which they had unwittingly selected was a little bay. For a long time they sat comparing their specimens. Then Frank said, "Come along, it is time to be moving."

As he rose to his feet he uttered an exclamation of dismay. Although the tide was still at some little distance from the spot where they were sitting, it had already reached the cliffs extending out at either end of the bay. A brisk wind was blowing on shore, and the waves were already splashing against the foot of the rocks.

The whole party leaped to their feet, and seizing their cans ran off at the top of their speed to the end of the bay.