"The windmill sized lightning bolt"

The team continued to swim through The Old Sea. Arvena had never been to the Ruins of Aqumus before, but she firmly believed that it was easy to find the location, on the count that the ruins are huge. It shouldn't be hard to miss them, even under the sea. Furthermore, she's read enough books about it to know how to analyze her surroundings within The Old Sea, she even labeled herself an expert! Progress was inevitable.

They were five kilometers away from the sea shores right now, and although they weren't in danger, this was where they met with a bit of a barricade. The sea floor was at a higher elevation here, they were up against an underwater hill of sorts, point being, they had to swim upwards, and above it! Considering that their muscles twitched while they swam upwards, it meant that this was no different from climbing an actual hill. It was tiring.