Water spirits?

Twenty years ago I took a picture of Erica when we visited  the falls near Roseau on the island of  Dominica, she's the one in the middle with the good tan.

This summer not a waterfall but the source of a small river, the Saint-Pons as is bursts forth from the rock cliffs. It was clear and fresh, but very cold. Despite that we all managed a paddle around to cool down.

 Joseph was typically first in last out, maybe we've all got the gene that attracts us to water?