Jason deCaires Taylor recently created the world's first underwater sculpture park in Grenada, West Indies. His sculptures are created from materials that encourage underwater life to colonize and change them; the ecosystem itself is part of the sculpture, and the interaction of the two dramatizes the transformative nature of life. There is something haunting about these works, all cast from real people, all located in the ethereal underwater of the Caribbean sea. I can imagine what it must be like to dive among them-how fragile one might feel in the shifting water and soundless light.
More images of his work can be found here: http://www.underwatersculpture.com/index.asp