Unless you are cold or low on gas, there's no reason not to spend some time hanging out in the shallows at the end of a dive. In the Eastern Pacific, the shallow water is often full of fascinating jellies, and "deco" can be one of the most fun parts of the dive. I've also found very cool critters on mooring lines and buoys, and on resort dives where a boat is anchored in shallow water, one can often find things to look at while cruising around the anchor.
