Currently, for example, many of the costs associated with the ecological and morphological degradation of the Lagoon are “externalised”, in other words, these costs are not borne by those who contribute to the damage, like speed boats or industrial polluters. The costs of insurance against increased flood risk are another example of the externalisation of costs. In these cases, costs are increased for the tourism sector and shops, offices and facilities exposed to flooding. But other sectors, such as fishing and agriculture, also bear costs, due, for example, to the negative impact of morphological changes and water pollution. To give just one example, the traditional Lagoon fishery (in existence since records began to be kept) was largely abandoned in the 1980s, a period during which fishing in the Lagoon became largely untenable due to environmental factors.