Campaigners say they're not against tourists, but are against the effects produced by having too many of them on the islands.
Holidaymakers are reportedly phoning hotels in the Canaries to ask if they'll be safe, ahead of mass protests over tourism.
A group called The Canaries Are Exhausted is planning on staging major demonstrations on April 20th, and are threatening to go on hunger strike if new tourist attractions aren't halted.
The Daily Mail reports residents in Tenerife, Gran Canaria, La Palma and Lanzarote have pledged to take part in protests over developments after Tenerife received record numbers of visitors last year.
Campaigners say they're not against tourists, but are against the effects produced by having too many of them on the islands.

Daniel Kinahan Set To Apply For Bail
Former Swimming Coach George Gibney Jailed For Over 15 Years For Sexual Abuse Of Children
Robert Pether Returning To Ireland After Five-Year Iraqi Detention
Over 23,000 Teachers Beginning Industrial Action Today
New Funding Announced For Youth Services And Counselling In Kildare On World Mental Health Day
Jury In Triple Murder Trial Of Louth Family Sent Home
Appointment Cancellations Expected As Strikes To Take Place Next Week
Families Face Delays Arranging Funerals Amid Pressure On Post-Mortem Services