From Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Ocean_colonization

Ocean colonization is the theory of extending society territorially to the ocean by permanent settlements floating on the ocean surface and submerged below, employing offshore construction. In a broader sense the ocean being subject of colonization and colonialism has been critically identified with exploitive ocean development, such as deep sea mining. In this regard blue justice groups have also used the term blue colonization.

Ocean Colonization
AndrasGyorfi.jpg
The theory of developing permanent dwellings in the ocean, both floating and sunken, to allow permanent human settlement. This idea was first suggested by Friedman and Gramlich, and has been researched since the early 1990s.

The process of extending space available for humans to inhabit involves developing seasteads such as artificial islands, floating rigid structures, extreme-sized cruise ships or even submerged structures, to provide permanent living quarters for sections of the world's population. Specifically catering for the growing issue of overpopulation, and need for extra housing as a result, the urban theorists that have pursued this idea also suggesting it as a sustainable form of living to help assist climate change  Colonies may form their own sovereign state of independence, with these structures also being generally less impacted by natural disasters.

However this theory for future urban planning has been critiqued by other scientists, suggesting that developing artificial structures in an aquatic environment will disrupt the natural marine ecosystem and may instead be impacted by aquatic natural disasters such as tsunamis. The debate against this theory further notes the threat of security of these colonies and the potential lack of protection without an overseeing government or body.

The utopian theory of ocean colonisation has been explored and visually explained in many forms of entertainment such as in gaming, virtual realities and science-fiction movies, to show the potentially positive and negative changes on societies daily living.

Lessons learned from ocean colonization may prove applicable to space colonization. The ocean may prove simpler to colonize than space and thus occur first, providing a proving ground for the latter. In particular, the issue of sovereignty may bear many similarities between ocean and space colonization; adjustments to social life under harsher circumstances would apply similarly to the ocean and to space; and many technologies may have uses in both environments. 

Technologies