Marine fungi are species of fungi that live in marine or estuarine environments. The reefs are rich in marine biodiversity. Cornwall has varied habitats including terrestrial and marine ecosystems. Mycoplankton are saprotropic members of the plankton communities of marine and freshwater ecosystems. There are more than 15,000 species of bivalves that live in both marine and freshwater. There is an abundance of marine and avian wildlife. Anisakis is a genus of parasitic nematodes that have lifecycles involving fish and marine mammals. Jellyfish are well placed to benefit from disturbance of marine ecosystems. He was chairman for the Committee on the Merchant Marine and Fisheries. They act as nurseries for many marine and bird species. In 1892, it became a maritime component as the Royal Indian Marine (RIM). Nikumaroro is sporadically visited by biologists attracted to its extensive marine and avian ecosystems. Scientists observe annelids to monitor the quality of marine and fresh water. The existence of aposematism in marine ecosystems is controversial. There were also many types of marine reptiles.