The Scoglio d'Africa (or Scoglio d'Affrica) also named Formica di Monte Cristo ("Monte Cristo's Ant"), is a solitary small

skerry A skerry is a small rocky island, or islet, usually too small for human habitation. It may simply be a rocky reef. A skerry can also be called a low sea stack. A skerry may have vegetative life such as moss and small, hardy grasses. They a ...

belonging to the Tuscan Archipelago located in open sea between the

Tyrrhenian Sea The Tyrrhenian Sea (; it, Mar Tirreno , french: Mer Tyrrhénienne , sc, Mare Tirrenu, co, Mari Tirrenu, scn, Mari Tirrenu, nap, Mare Tirreno) is part of the Mediterranean Sea off the western coast of Italy. It is named for the Tyrrhenian pe ...

and the

Corsica Channel Corsica ( , Upper , Southern ; it, Corsica; ; french: Corse ; lij, Còrsega; sc, Còssiga) is an island in the Mediterranean Sea and one of the 18 regions of France. It is the fourth-largest island in the Mediterranean and lies southeast of ...

. It is located west of the Island of

Montecristo Montecristo, also Monte Cristo (, ) and formerly Oglasa ( grc, Ὠγλάσσα, Ōglássa), is an island in the Tyrrhenian Sea and part of the Tuscan Archipelago. Administratively it belongs to the municipality of Portoferraio in the province o ...

, south of Pianosa Island and east of

Corsica Corsica ( , Upper , Southern ; it, Corsica; ; french: Corse ; lij, Còrsega; sc, Còssiga) is an island in the Mediterranean Sea and one of the 18 regions of France. It is the fourth-largest island in the Mediterranean and lies southeast of ...

. Administratively it belongs to the

municipality A municipality is usually a single administrative division having corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality'' may also mean the go ...

Portoferraio Portoferraio () is a town and ''comune'' in the province of Livorno, on the edge of the eponymous harbour of the island of Elba. It is the island's largest city. Because of its terrain, many of its buildings are situated on the slopes of a tiny h ...

. It is also part of the

Tuscan Archipelago National Park Arcipelago Toscano National Park is a large Tuscan Archipelago national park and marine park in the Provinces of Grosseto and Livorno, western Tuscany, Italy. Geography The Tuscan archipelago (chain of islands) is located between the Ligurian S ...

Description

Regarding its size and its shape, it can be considered to all effects an emergent rock in a stretch of shallow sea. It has a rounded contour with the diameter of , an area of and an altitude of only

above sea level Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as ''orthometric heights''. The comb ...

depending from the

tide Tides are the rise and fall of sea levels caused by the combined effects of the gravity, gravitational forces exerted by the Moon (and to a much lesser extent, the Sun) and are also caused by the Earth and Moon orbiting one another. Tide t ...

s and the waves. Geologically the

belongs to a submarine

ridge A ridge or a mountain ridge is a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for an extended distance. The sides of the ridge slope away from the narrow top on either side. The line ...

starting few miles east of

Capraia Capraia is an Italian island, the northwesternmost of the seven islands of the Tuscan Archipelago, and the third largest after Elba and Giglio. It is also a ''comune'' (Capraia Isola) belonging to the Province of Livorno. The island has a p ...

and it extends toward south up to reach

Pianosa Pianosa () is an island in the Tuscan Archipelago in the Tyrrhenian Sea, Italy. It is about in area, with a coastal perimeter of . Geography In Roman times the island was named ''Planasia'' (plain) because of its flatness – its highest poin ...

. The ridge is lying at an average depth of but it decreases in proximity of the island to arrive at . The depths in the region among the skerry and Montecristo reach .

Fauna

The seabed around the rock is composed by two types of

biocoenosis A biocenosis (UK English, ''biocoenosis'', also biocenose, biocoenose, biotic community, biological community, ecological community, life assemblage), coined by Karl Möbius in 1877, describes the interacting organisms living together in a hab ...

; the first is formed by

algae Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mic ...

bryozoa Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of simple, aquatic invertebrate animals, nearly all living in sedentary colonies. Typically about long, they have a special feeding structure called a l ...

and

polychaete Polychaeta () is a paraphyletic class (biology), class of generally marine invertebrate, marine annelid worms, common name, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that ...

s that form a structure rich in cavities; the second is formed by prairies of ''

Posidonia ''Posidonia'' is a genus of flowering plants. It contains nine species of marine plants ("seagrass"), found in the seas of the Mediterranean and around the south coast of Australia. The APG system (1998) and APG II system (2003) accept this gen ...

''.Società Toscana di Scienze Naturali
/ref>

References

{{authority control Islands of Tuscany Province of Livorno Arcipelago Toscano National Park

Description

Fauna

See also

References