Solid waste and littering
In areas with high concentrations of tourist activities and appealing natural attractions, waste disposal is a serious problem and improper disposal can be a major despoiler of the natural environment - rivers, scenic areas, and roadsides.
For example, cruise ships in the Caribbean are estimated to produce more than 70,000 tons of waste each year.
Solid waste and littering can degrade the physical appearance of the water and shoreline and cause the death of marine animals.
In mountain areas, trekking tourists generate a great deal of waste. Tourists on expedition leave behind their garbage, oxygen cylinders and even camping equipment.
Such practices degrade the environment with all the detritus typical of the developed world, in remote areas that have few garbage collection or disposal facilities.