Building a secret underground crocodile pond deep in the jungle requires steady manual work and careful planning. The digging alone takes days, and shaping a pond that can safely hold water demands ...

Building a fish pond beside a hobbit-style underground house required careful digging and constant reinforcement. As they ...

Liz is a marine biologist, environmental regulation specialist, and science writer. She has previously studied Antarctic fish, seaweed, and marine coastal ecology. A natural pond is an excellent, easy ...