Review and images by JimoAi; edited by bmathison1972
The deep ocean is one of the most inhospitable habitats on this planet, and animals have to find extreme ways to adapt or die out. For one, sunlight only goes as low as 1000 m, although any significant light rarely goes to 200 m, which means that there are no plants to photosynthesize and in turn, no plants for herbivores to graze on.