Thucydides, History of the Peloponnesian War
Benjamin Jowett, Ed.

14. The Athenians, seeing how matters stood, rushed in upon them at both mouths of the harbour.¹ Most of the enemies' ships had by this time got into deep water and were facing them. These they put to flight and pursued them as well as they could in such a narrow space, damaging many and taking five, one of them with the crew. They charged the remaining vessels even after they had reached the land, and there were some which they disabled while the crews were getting into them and before they put out at all. [2] Others they succeeded in tying to their own ships and began to drag them away empty, the sailors having taken flight. At this sight the Lacedaemonians were in an agony, for their friends were being cut off in the island; they hurried to the rescue, and dashing armed as they were into the sea, took hold of the ships and pulled them back;² [3] that was a time when every one thought that the action was at a stand where he himself was not engaged³. The confusion was tremendous; the two combatants in this battle for the ships interchanging their usual manner of fighting; for the Lacedaemonians in their excitement and desperation did, as one may say, carry on a sea-fight from the land, and the Athenians, who were victorious and eager to push their good fortune to the utmost, waged a land-fight from their ships. [4] At length, after giving each other much trouble and inflicting great damage, they parted. [5] The Lacedaemonians saved their empty ships, with the exception of those which were first taken. Both sides retired to their encampments; the Athenians then raised a trophy, gave up the dead, and took possession of the wrecks. They lost no time in sailing round the island and establishing a guard over the men who were cut off there. The Peloponnesians on the mainland, who had now been joined by all their contingents, remained in their position before Pylos.