On its own, cave diving is a dangerous hobby. Filled with plenty of unknown and known dangers, and that's just accounting for the wild life. But when a new cave is uncovered and a particularly curious diver wants to check it out, things quickly go downhill.  New species of fish, new monstrosities found. An ancient gemstone and even a portal. What started as a 25 minute dive has quickly devolved into an adventure that Kaimana never wanted to go on. With new dangers constantly lurking about, and oxygen running low, Kaimana Kahale tries his best to just keep swimming.