Accobams

Species occurring in the Mediterranean Sea

Occurrence	Species	Common name	Notes
Regular	*Balaenoptera physalus*	Fin whale
	*Delphinus delphis*	Short-beaked common dolphin
	*Globicephala melas*	Long-finned pilot whale
	*Grampus griseus*	Risso's dolphin
	Orcinus orca	Orca	Gibraltar Strait population
	Phocoena phocoena	Harbour porpoise	Limited to Northern Aegean Sea
	Physeter macrocephalus	Sperm whale
	*Stenella coeruleoalba*	Striped dolphin
	*Tursiops truncatus*	Common bottlenose dolphin
	*Ziphius cavirostris*	Cuvier's beaked whale
Visitor	*Balaenoptera acutorostrata*	Common minke whale
	*Megaptera novaeangliae*	Humpback whale
	*Pseudorca crassidens*	False killer whale
	*Steno bredanensis*	Rough-toothed dolphin
	*Orcinus orca*	Orca	Mediterranean Sea waters except the Strait of Gibraltar
Vagrant	*Balaenoptera borealis*	Sei whale
	*Eubalaena glacialis*	North Atlantic right whale
	*Hyperoodon ampullatus*	Northern bottlenose whale
	*Kogia sima*	Dwarf sperm whale
	*Mesoplodon bidens*	Sowerby's beaked whale	Species identification uncertain
	*Mesoplodon densirostris*	Blainville's beaked whale
	*Mesoplodon europaeus*	Gervais' beaked whale
	*Sousa chinensis*	Indo-Pacific humpbacked dolphin
	*Phocoena phocoena*	Harbour porpoise	Northern Aegean Sea excepted

Definitions:

Regular. A taxon regularly reproducing, feeding and carrying out all its vital functions in a region.

Visitor. A taxon that does not reproduce regularly within a region, but which has been repeatedly, albeit irregularly found within its boundaries.

Vagrant. A taxon which has been known to occur within the boundaries of a region, but only on rare occasions.

Introduced:

Introduction: the movement, by human agency, of a taxon outside its natural range (past or present).

Intentional introduction: an introduction made deliberately by humans, involving the purposeful (authorised or unauthorised) movement of a taxon outside of its natural range and dispersal potential.

Unintentional introduction: an unintended introduction made as a result of a taxon utilising humans or human delivery systems as vectors for dispersal outside its natural range.

Re-introduction: an attempt to establish a taxon in an area which was once part of its historical range, but from which it has been extirpated or become extinct.

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