Tourism along the Essex coastline is a vital part of the economy. Especially along the 'Sunshine Coast', which encompasses the towns of Clacton, Frinton Walton and Harwich.
Here are some useful web links:
The official Essex Sunshine Coast website: http://www.essex-sunshine-coast.org.uk/
Visitor Guide: http://www.tendringdc.gov.uk/sites/default/files/visitor_guide/HTML/index.html#/20/
Introduction: http://www.tendringdc.gov.uk/leisure/tourism-explore-our-essex-sunshine-coast
A little bit of history.... http://www.essexrecordofficeblog.co.uk/a-summer-holiday-on-essexs-sunshine-coast/
Facebook page: https://www.facebook.com/pages/Essex-Sunshine-Coast/104941502995124
Why people may want to visit: http://www.britishdestinations.co.uk/destinations.aspx/Essex_Sunshine_Coast_-_Tendring_Coast_-and-_Countryside
Visit Essex: http://www.visitessex.com/discover/maritime/Coastal_delights.aspx
http://www.essexlifemag.co.uk/out-about/places/discover_10_top_essex_spring_days_out_1_1631435
There is probably plenty more but this should be enough to keep you going for now!