CAPE TOWN, SOUTH AFRICA
Broadnose sevengill sharks — Notorynchus cepedianus — are known by some as cow sharks, maybe for their plodding, methodical way of moving through shallow coastal waters. This allows divers in hot spots such as South Africa to really take in the majesty of these fish: Sevengills are closely related to ancient sharks that thrived around 300 million years ago. Keep a keen eye out in cold-water habitats such as this bull kelp forest. While most sharks have five gill slits, broadnose sevengills stand out.