Five Biggest Coastal Cities by Continent

Name the five largest urban areas which have a coastline to an ocean or marginal sea for each continent
each country's continent is according to the one in the Countries of the World quiz
according to citypopulation.de in Jan 2016
Quiz by relessness
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Last updated: August 23, 2017
First submittedAugust 23, 2017
Times taken234
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North America
22.0 mil
New York City
17.6 mil
Los Angeles
7.60 mil
San Francisco
7.35 mil
Boston
6.20 mil
Houston
 
 
South America
15.8 mil
Buenos Aires
12.7 mil
Rio de Janeiro
9.95 mil
Lima
4.08 mil
Porto Alegre
3.78 mil
Recife
Europe
14.3 mil
Istanbul
5.45 mil
St. Petersburg
4.65 mil
Barcelona
4.25 mil
Naples
3.60 mil
Rome
 
 
Africa
17.1 mil
Lagos
6.80 mil
Luanda
5.30 mil
Dar es Salaam
5.05 mil
Abidjan
5.15 mil
Alexandria
Asia
47.7 mil
Guangzhou
39.5 mil
Tokyo
30.9 mil
Shanghai
28.1 mil
Jakarta
24.3 mil
Karachi
 
 
Oceania
4.90 mil
Sydney
4.40 mil
Melbourne
2.90 mil
Brisbane
2.03 mil
Perth
1.44 mil
Auckland
+1
Level 73
Sep 3, 2017
the last 2 populations in africa are in the wrong order
+1
Level 73
Feb 7, 2018
The figure for Barcelona is incorrect. The data that you took from citypopulation is the population of the province, not the municipality (which would be around 1 million) or the metropolitan area (around 2 million). The fact that the city and the province have the same name may lead to confusion.