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Coastal Area 12802 Izu Peninsula coast

Basic Information A separate window opensReferences

Relevant municipalities Manazuru, Kanagawa Prefecture; Ito, Izu, Shimoda, Kawazu, Matsuzaki, Numazu, Nishi-Izu, Higashi-Izu, Minami-Izu, Atami, Shizuoka Prefecture
Area (km2) 951

Reason(s) for selection A separate window opensCriteria

Selected due to high levels for the criteria 1, 4 and 5, and selected by MARXAN software.

Characteristics A separate window opensReferences

These waters extend along the coast of the Izu Peninsula from the southern Manazuru Peninsula to the mouth of the Kano River in Suruga Bay. Off the coast in the vicinity of Hatsushima Is. are communities of Pterocladia capillacea, Gelidium pacificum, Gelidium elegans, Gelidium japonicum, and agar (Ministry of the Environment, 2001). Off the Nishikigaura coast in the city of Atami are waters with a high degree of diversity of species, including rare gobies such as Vanderhorstia auropunctata, Vanderhorstia macropteryx, Cryptocentrus shigensis, and others, as well as Maroubra yasudai. The waters off the Jogasaki coast centered on the Izu Oceanic Park have a remarkably high degree of diversity of species, including rare species such as Maroubra yasudai, Pseudanthias leucozonus, Pseudotrichonotus altivelis and others. Off the coast of the southeast Izu Peninsula (from Shirahama to Touji) are seaweed communities, mostly kombu kelp and Sargassum fulvellum, as well as Ecklonia cava, species highly similar to Sargassum siliquastrum, Sargassum piluliferum, Eisenia bicyclis%, Ecklonia cava, and others (Ministry of the Environment, 2001). In addition, Oura Bay is home to the westernmost seaweed beds in Sagami Bay as well as a central location in the distribution of warm-water seaweed, and a habitat for rare species of fish that live at the sandy sea floor, including Matsubaraea fusiforme, Silhouettea dotui, and others (Seno et al., 1997; Senou et al., 2006; Seno and Matsuura, 2007; Takeuchi et al., 2012a ; Takeuchi et al., 2012b; Kanagawa Prefectural Museum of Natural History, eds., 2013). The seaweed beds off the southern Izu Peninsula are feeding waters for green turtle (Suganuma et al., 2010), and there is a high diversity of coral species in the waters near Izu Hirizo Beach, Tondai, and the Port of Nakagi in the town of Minamiizu, Kamo-gun (Ministry of the Environment, 2001). Among the number of islands in the south, the waters of Mikomoto Island are home to a breeding colony of Japanese murrelet (an IUCN endangered species) (BirdLife International, 2012). The waters off the coast from Ugusu through Cape Kogane to Arari are highly diverse in fish species, including Blenniidae, gobies and others. The waters off Cape Ose, like those off the Jogasaki coast, are among the waters of the Izu Peninsula that have a remarkably high degree of diversity of species, including numerous rare species such as Maroubra yasudai, Pseudanthias leucozonus, Pseudotrichonotus altivelis, and others (Seno et al., 1997; Senou et al., 2006; Seno and Matsuura, 2007; Takeuchi et al., 2012a ; Takeuchi et al., 2012b; Kanagawa Prefectural Museum of Natural History, eds., 2013), and in the river mouth area in the inner bay creatures can be seen that live in brackish water, such as flat-headed goby and others (Kato, personal communication). Eura Bay is a rare habitat for Acropora tumida (Acropora pruinosa), once plentiful but now greatly reduced in number (Nanto et al, 2009).

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2)
Moba (seaweed bed) (km2) 46.7
Coral reef coverage (km2) 0
Natural coast (km) 225.5
Rate of natural coast (%) 64.8
Sand bank / submerged sand bank
Other habitats

Species information (*) A separate window opensData source

Criteria 1
Oxynotus japonicus (Japanese roughshark)
Cottus kazika (Fourspine sculpin)
Melanostigma orientale
Parabrotula tanseimaru
Lateolabrax latus (Blackfin seabass)
Bassozetus zenkevitchi
Apogon fukuii
Metacrangon tropis
Trizocheles albatrossae
Richardina rupicola
Majella brevipes
Ambiaxiopsis altimanus
Munidopsis camelus
Paralomis cristata
Rochinia debilis
<Bivalva, Gastropoda>
Stenothyra edogawensis
Angustassiminea castanea
Stenomelania rufescens
Corbicula japonica
<Other invertebrate>
Anoplodactylus excelsus
Anoplodactylus gestiens
Anoplodactylus imperialis
Anoplodactylus lagenus
Anoplodactylus shimodaensis
Ascorhynchus okai
Ascorhynchus utinomii
Chonothea hians
Cilunculus haradai
Cilunculus sekiguchii
Nymphon ortmanni
Pycnogonum tenue
Acanthogorgia paradoxa
Anthoplexaura dimorpha
Pennatula rubescens
Criteria 2
Apus pacificus (Pacific Swift)[Br/Ne]
Monticola solitarius (Blue Rock-thrush)[Br/Ne]
Larus crassirostris (Black-tailed Gull)
Larus crassirostris (Black-tailed Gull)[Br/Ne]
Larus schistisagus (Slaty-backed Gull)
Larus schistisagus (Slaty-backed Gull)[Br/Ne]
Egretta sacra (Pacific Reef-egret)[Br/Ne]
Falco peregrinus (Peregrine Falcon)[Br/Ne]
Pandion haliaetus (Osprey)[Br/Ne]
Parapristipoma trilineatum (Chicken grunt)[Sp]
Engraulis japonicus (Japanese anchovy)[Sp]
Scomber australasicus (Blue mackerel)[Sp]
Seriola quinqueradiata (Japanese amberjack)[Sp]
Trachurus japonicus (Japanese jack mackerel)[Sp]
Sardinops melanostictus (Japanese pilchard)[Sp]
Scomber japonicus (Chub mackerel)[Sp]
Sepioteuthis lessoniana (Bigfin Reef Squid)
Loligo bleekeri (Spear squid)
Criteria 3
Narke japonica
Anguilla japonica (Japanese eel)
Cottus kazika (Fourspine sculpin)
Gymnogobius scrobiculatus
Cottus pollux (Japanese fluvial sculpin )
<Bivalva, Gastropoda>
Stenomelania rufescens
Criteria 4
Acanthogorgia paradoxa
Anthoplexaura dimorpha
Callogorgia aspera
Dendronephthya acaulis
Dendronephthya magnacantha
Dendronephthya maxima
Euplexaura curvata
Melithaea dichotoma
Muricella abnormalis
Pennatula rubescens
Placogorgia japonica
Plumarella adhaerens
Thesea mitsukurii
Criteria 7
Luciogobius guttatus (Flat-headed goby)
<Bivalva, Gastropoda>
Stenomelania rufescens
Truncatella pfeifferi
Corbicula japonica

* This is the species list of which meet the criteria. In that matter, this list does not include all species that inhabit the individual area.
Abbreviation in the information is as follows.
[Br/Ne] : Adjacent water of breeding area or nesting site
[Sp] : spawning area
[Ad] : species not used for analysis but add to the list because inhabit information was collected later
[Ex] : species used for analysis but considered to be possibly extinct in the EBSA region (area)
No mark : data of species distribution


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