Editing Coast (section)

== Threats ==
{{see also|Coastal development hazards|marine coastal ecosystem}}

Coasts also face many [[Human impact on the environment|human-induced environmental impacts]] and [[coastal development hazards]]. The most important ones are: 
* Pollution which can be in the form of [[water pollution]], [[nutrient pollution]] (leading to [[coastal eutrophication]] and [[Harmful algal bloom|harmful algal blooms]]), [[Oil spill|oil spills]] or [[marine debris]] that is contaminating coasts with plastic and other trash.
* [[Sea level rise]], and associated issues like [[coastal erosion]] and [[saltwater intrusion]].

=== Pollution ===
{{See also|Human impact on marine life}}
[[File:Marbleheadcoastline.jpg|thumb|A settled coastline in [[Marblehead, Massachusetts]]. Once a fishing port, the harbor is now dedicated to tourism and pleasure boating. Observe that the sand and rocks have been darkened by oil slick up to the high-water line.]]
[[File:Beach at Msasani Bay, Dar es Salaam, Tanzania.JPG|thumb|This stretch of coast in Tanzania's capital Dar es Salaam serves as a public waste dump.]]
[[File:Aquatic Dead Zones.jpg|thumb|[[Dead zone (ecology)|Dead zones]] occur when phosphorus and nitrogen from fertilizers cause excessive growth of microorganisms, which depletes oxygen and kills fauna.]]
The pollution of coastlines is connected to [[marine pollution]] which can occur from a number of sources: [[Marine debris]] (garbage and industrial debris); the [[Petroleum transport|transportation of petroleum]] in [[tanker (ship)|tankers]], increasing the probability of large [[oil spill]]s; small oil spills created by large and small vessels, which flush [[bilge]] water into the ocean.

==== Marine pollution ====
{{excerpt|Marine pollution|paragraphs=1-2|file=no}}

==== Marine debris ====
{{excerpt|Marine debris|paragraphs=1-2|file=no}}

==== Microplastics ====
{{excerpt|Plastic soup#Microplastics|paragraphs=1-2|file=no}}

=== Sea level rise due to climate change ===
{{Excerpt|Sea level rise|paragraphs=1-2|file=no}}