A tombolo is a sandy or shingle isthmus. A tombolo, from the Italian tombolo, meaning 'pillow' or 'cushion', and sometimes translated incorrectly as ayre, is a deposition landform by which an island becomes attached to the mainland by a narrow piece of land such as a spit or bar. Once attached, the island is then known as a tied island.
A marine park is a designated park consisting of an area of sea set aside to achieve ecological sustainability, promote marine awareness and understanding, enable marine recreational activities, and provide benefits for Indigenous peoples and coastal communities. Most marine parks are managed by national governments, and organized like 'watery' national parks, whereas marine protected areas and marine reserves are often managed by a subnational entity or non-governmental organization, such as a conservation authority.
A ria is a coastal inlet formed by the partial submergence of an unglaciated river valley. It is a drowned river valley that remains open to the sea.
Sagres Point is a windswept shelf-like promontory located in the southwest Algarve region of southern Portugal. Only 4 km to the west and 3 km to the north lies Cape St. Vincent, which is usually taken as the southwesternmost tip of Europe. The vicinity of Sagres Point and Cape St. Vincent has been used for religious purposes since Neolithic times, to which standing menhirs near Vila do Bispo, a few miles from both points, attest.
A tidal island is a raised area of land within a waterbody, which is connected to the larger mainland by a natural isthmus or man-made causeway that is exposed at low tide and submerged at high tide, causing the land to switch between being a promontory/peninsula and an island depending on tidal conditions.
A bird observatory is a centre for the study of bird migration and bird populations. They are usually focused on local birds, but may also include interest in far-flung areas. Most bird observatories are small operations with a limited staff, many volunteers and a not-for-profit educational status. Many bird observatories conduct bird ringing or bird banding.
A headland, also known as a head, is a coastal landform, a point of land usually high and often with a sheer drop, that extends into a body of water. It is a type of promontory. A headland of considerable size often is called a cape. Headlands are characterised by high, breaking waves, rocky shores, intense erosion, and steep sea cliff.
This timeline of European exploration lists major geographic discoveries and other firsts credited to or involving Europeans during the Age of Discovery and the following centuries, between the years AD 1418 and 1957.
The following index is provided as an overview of and topical guide to Wikipedia's articles on recreational dive sites. The level of coverage may vary:
Recreational dive sites are specific places that recreational scuba divers go to enjoy the underwater environment or for training purposes. They include technical diving sites beyond the range generally accepted for recreational diving. In this context all diving done for recreational purposes is included. Professional diving tends to be done where the job is, and with the exception of diver training and leading groups of recreational divers, does not generally occur at specific sites chosen for their easy access, pleasant conditions or interesting features.
