See how cuttlefish change colour to both attract mates and ward off rivals. Here, the seahorse blends perfectly into its coral surroundings, while a male day octopus hides to avoid the female's cannibalistic impulses.
Despite the heat, the Gulf of Oman is full of nutrients which sustain a host of marine migrants. The behemoth whale shark, hawksbill turtle, and millions of tiny, exotic fish settle in to feast.
In the Gulf of Oman, survival is all about defense. Some species of sea urchins and sea slugs rely on toxins to keep predators at bay, while guitarfish use their size and armored bodies to stay off the menu.
The sea turtle is one of the oldest animals on Earth. These ancient mariners pre-date the dinosaurs and have existed for over 100 million years, but now all seven of the surviving species are endangered.
