This dive is more about diving in a freshwater volcanic crater which was the coolest part of the dive. Heated by natural springs, thermal vents, and boasting amazing biodiversity, Laguna de Apoyo is a unique diving ... This dive is more about diving in a freshwater volcanic crater which was the coolest part of the dive. Heated by natural springs, thermal vents, and boasting amazing biodiversity, Laguna de Apoyo is a unique diving site. The water, which stays at a consistently temperate 28-29 C, offers pool-like conditions for some of the easiest and most accessible diving available in nature. Created by a massive volcanic explosion over 23,000 years ago, the lagoon is now a peaceful environment that attracts a range of visitors looking to relax, enjoy nature. Saw quite a bit of variety of freshwater fish. My Youtube video: https://youtu.be/d80f_ZYBB5s