So what about the sea and diving for us geezers? If I could shake Poseidon’s hand and slap him on the back with heart-felt thanks I would do so many times over. The simple fact is that when you drop into the sea with your aqualung, all gravity is shuffled away. Balance is restored. A flick of your fins and you move through the aquatic world as if on a magic carpet. You may not be able to run a marathon or play vigorous singles tennis any more, but with your wits still about you and the ability to travel, you can continue to explore and enjoy diving.