Talk:Aurora/@comment-66.130.72.198-20150906022153/@comment-26794840-20150910113934

The floaters under the Floating Island are huge, so it may refer to that or to the dense forest (large biomass does not inevitably refer to a single life form).

The large biomass could also be the Mushroom Forest, or even simpler it can refer to the wholeness of the life form in the ocean, hence the large biomass.