It was scarier when Rex initially fell into the water earlier.
He didn't know what dwelled inside its depth.
But now that he know, that the creatures living inside the depths of this water, were the Time Draugars and also the mutated eels, that fear of the unknown disappeared instantly. Rex was aiming to reach the Lotus of Lunar Heart and get this over with.
Gazing ahead, he saw the Lotus of Lunar Heart on a small island at the center.
Roughly, it was a kilometer from the land to that island.
Had Rex tried to leap over that kilometer, he would certainly have fallen down because of the pulling effect from the mutated eels. So the only way to reach the island was directly through the water or leaping high enough, out of the range of the pulling effect.
Now that he was already in the water, the choice was clear to him.
Controlling his kingly energy, he leaped out of the water and stood on its surface.