Water warm as a bath tub

Yesterday, I went free-diving in Tai Au Mun, first time in a long while. Surface water was like a baby bath, very pleasant. The large algae have not completely died down, but there are fewer bushes. Coral growth in the bay however seems to increase. I saw several puffer fish, tons of marbled rockfish, and a small (20 cm) beige grouper, hiding under a rock. For some reason I forgot to bring my knife and only carried 2 instead of 3kg, so I was a bit too buoyant. Other than that, it as fantastic, and visibility was very reasonable.