The video takes viewers on an underwater dive exploring a sunken shipwreck. It highlights the marine life that has made the wreck its home, including coral, fish, and unique creatures like the mantis shrimp and nudibranch. The dive concludes with a sighting of a hawksbill sea turtle, providing an exciting end to the exploration.

What is the significance of the nudibranch's tentacles?

What type of turtle did the speaker see at the end of the dive?