Casio has just announced the latest models in its 'G' line of watches. This time the focus is on environmental protection, with part of the proceeds from the Dolphin & Whale Eco-Research Network watch going to support research into how dolphins and whales live. The watch itself also leans toward helping the environment by being solar-powered. "What if it's dark, and I need to know the time?" I hear you ask. Well, you're out of luck, I'm afraid. Casio states that the display "shuts off after a certain period in a dark location." Oh well, if you get caught out in the dark then don't get down. Just think of the happy little dolphin scientist you've helped out!