Diving is not without risk—there is always a chance of death. There is always a latent or potential lethality within the “system”—where system is defined as the equipment, people and the physical, social or cultural environment. We cannot make diving 100 percent safe despite what anyone tells you. We can make things safer, but we cannot make diving safe.

Since 2011, scientists in South Africa have observed an unusual event: large groups of humpback whales seen from mid-October to mid-December off the western coast of South Africa, between Cape Town and St. Helena Bay. During this time period, depending on weather and wind conditions, the Benguela Current brings krill, upon which the whales feed, northward from Antarctica.