The physical impacts of climate change on coastlines are bad, but the human impacts could be even worse. Humans put more pressures on coasts than any other area, which should be no surprise to you now that you've seen how reliant on the coasts are settlements are.
Links
[1] https://www.grida.no/resources/5638
[2] https://creativecommons.org/licenses/by-nc-sa/2.0/
[3] http://onesharedocean.org/public_store/lmes_socioeco/population/lmes_socio_eco_coastal_population_2010_100km.png
[4] https://www.washingtonpost.com/news/wonk/wp/2015/09/03/how-so-many-of-the-worlds-people-live-in-so-little-of-its-space/
[5] http://www.oceansatlas.org/subtopic/en/c/114/
[6] https://www.flickr.com/
[7] http://www.flickr.com/photos/bear_in_va/
[8] http://creativecommons.org/licenses/by-nc-sa/2.0/