Evolution is a weird subject if you come to succulent plants like cacti. Did you know that all succulent plants are originating from underwater plants. Hence that divers walking around in our garden are amazed by the view of many plants they link with plants they meet once they’re exploring the sea bottom. Southern Africa, where many succulent plants originate from, was once largely covered with lakes and during a period of thousands, maybe millions, of years these plants had to adept to a complet opposite environment; from surviving under water to surviving in a desert. So these plants evolved into waterstoring plants; storing water in roots, leafs and/or stems. Reason for us to collect some shells and rocks at the nearby beach and cover a small part of our garden with it.