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MOE home > Nature and Parks > EBSA home > Coastal Area > 11701 Central and southern Sanriku coast


Coastal Area 11701 Central and southern Sanriku coast

Basic Information A separate window opensReferences

Relevant municipalities Kamaishi, Iwaizumi, Kuji, Miyako, Yamada, Ofunato, Otsuchi, Tanohata, Fudai, Noda, Rikuzentakada, Iwate Prefecture; Kesennuma, Onagawa, Ishinomaki, Minamisanriku, Miyagi Prefecture
Area (km2) 1352

Reason(s) for selection A separate window opensCriteria

Selected due to high levels for the criteria 1, 2, 3, 4, 7 and 8, and selected by MARXAN software.

Characteristics A separate window opensReferences

These are the coastal waters off the Sanriku Rias Coast. The Sanriku Rias Coast is a typical coastline in which consecutive ria inlets are maintained in good condition. The inland bays of the rias (Yamada Bay, Funakoshi Bay, Ohtsuchi Bay, Hirota Bay, Shizugawa Bay and others) are home to expansive seaweed beds where eel grass, Zostera caulescens, Zostera caespitosa Miki, Phyllospadix iwatensis Makino and others) grow The seaweed beds of Yamada Bay in particular are home to pure communities with high levels of biodiversity. In addition, the inner tidal mud flats of Miyako Bay, Yamada Bay, Kamaishi Bay and others are highly diverse in terms of shallow-water benthos organisms. The ria coasts facing the open sea are highly productive, with mixtures of kombu kelp, wakame, and other seaweed beds. A large community of Sargassum yezoense is found here as well. The Minamisanriku Coast in the south is visited by Brent goose. The Mangokuura Sea is home to a mixture of sea-grass beds and seaweed beds, while Pyropia tenera has been confirmed to grow in the inner part of the sea. These waters also are rich in oyster, Japanese littleneck clam, and others. The Sanriku Ria Coast is a coast meeting highly on all criteria. In the mouth of the Kitakami River (Oppa Bay) live Asian clams, Japanese littleneck clams, sand bubbler crabs, Helice tridens, and others. Nagatsura Bay is home to Helice tridens, Deiratonotus cristatus, and Batillaria attramentaria (Ministry of the Environment, 2001). The seaweed beds here are feeding waters for green turtles in the summer (Yamane et al, 2013)

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2) 0.2
Moba (seaweed bed) (km2) 67.5
Coral reef coverage (km2)
Natural coast (km) 1045.6
Rate of natural coast (%) 75.3
Sand bank / submerged sand bank
Other habitats Oyster reef

Species information (*) A separate window opensData source

Criteria 1
Callorthinus ursinus (Northern Fur Seal)
Phoca largha (Larga Seal (Spotted Seal))
Branta bernicla (Brent Goose)
Zoarchias veneficus
Pholis nebulosa (Tidepool gunnel)
<Bivalva, Gastropoda>
Corbicula japonica
<Other invertebrate>
Cribrina japonica
<Vascular Plants>
Zostera caespitosa
Zostera caulescens
Criteria 2
Apus pacificus (Pacific Swift)[Br/Ne]
Monticola solitarius (Blue Rock-thrush)[Br/Ne]
Cerorhinca monocerata (Rhinoceros Auklet)
Cerorhinca monocerata (Rhinoceros Auklet)[Br/Ne]
Phalacrocorax capillatus (Japanese Cormorant)
Phalacrocorax capillatus (Japanese Cormorant)[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]
Calonectris leucomelas (Streaked Shearwater)
Calonectris leucomelas (Streaked Shearwater)[Br/Ne]
Oceanodroma castro (Madeiran Fork-tailed Petrel)
Oceanodroma castro (Madeiran Fork-tailed Petrel)[Br/Ne]
Oceanodroma leucorhoa (Leach's Fork-tailed Petrel)
Oceanodroma leucorhoa (Leach's Fork-tailed Petrel)[Br/Ne]
Charadrius dubius (Little Ringed Plover)[Br/Ne]
Larus hyperboreus (Glaucous Gull)
Puffinus tenuirostris (Slender-billed Shearwater)
Falco peregrinus (Peregrine Falcon)[Br/Ne]
Phalacrocorax pelagicus (Pelagic Cormorant)
Phalacrocorax pelagicus (Pelagic Cormorant)[Br/Ne]
Oceanodroma monorhis (Swinhoe's Fork-tailed Petrel)
Oceanodroma monorhis (Swinhoe's Fork-tailed Petrel)[Br/Ne]
Pandion haliaetus (Osprey)[Br/Ne]
Rissa tridactyla (Black-legged Kittiwake)
Ammodytes personatus (Japanese sand lance)[Sp]
Sebastes schlegelii (Korean rockfish)[Sp]
Theragra chalcogramma (Alaska pollock)[Sp]
Pleuronectes yokohamae (Marbled flounder)[Sp]
Gadus macrocephalus (Pacific cod)[Sp]
Tanakius kitaharae (Willowy flounder)[Sp]
Criteria 3
Synthliboramphus antiquus (Ancient Murrelet)
Podiceps cristatus (Great Crested Grebe)
Oceanodroma castro (Madeiran Fork-tailed Petrel)
Histrionicus histrionicus (Harlequin Duck)
Phalacrocorax pelagicus (Pelagic Cormorant)
Oceanodroma monorhis (Swinhoe's Fork-tailed Petrel)
Anguilla japonica (Japanese eel)
Lethenteron japonicum (Japanese lamprey)
Cottus hangiongensis
Leucopsarion petersii (Ice goby )
Gymnogobius petschiliensis
Cottus pollux (Japanese fluvial sculpin )
Chiromantes haematocheir
Helice (Helice) tridens
Deiratonotus cristatus
Ilyoplax pusilla
<Bivalva, Gastropoda>
Cerithideopsilla djadjariensis
Laguncula pulchella
Littorina brevicula
<Other invertebrate>
Chaetopterus cautus
<Vascular Plants>
Salicornia europaea (Common Glasswort)
Zostera caulescens
Criteria 4
Cerorhinca monocerata (Rhinoceros Auklet)
Calonectris leucomelas (Streaked Shearwater)
Oceanodroma castro (Madeiran Fork-tailed Petrel)
Oceanodroma leucorhoa (Leach's Fork-tailed Petrel)
Oceanodroma monorhis (Swinhoe's Fork-tailed Petrel)
Criteria 7
Lethenteron japonicum (Japanese lamprey)
Hypoptychus dybowskii (Korean sandlance)
Luciogobius guttatus (Flat-headed goby)
Gastersosteus aculeatus aculeatus (Three-spined stickleback)
<Bivalva, Gastropoda>
Umbonium moniliferum
<Vascular Plants>
Salicornia europaea (Common Glasswort)
Zostera marina (Eel grass)
Carex rugulosa
Triglochin maritimum
Criteria 8
<Natural Monuments>
Nesting site of Streaked Shearwater (Calonectris leucomelas) and Swinhoe's Fork-tailed Petrel (Oceanodroma monorhis) in Sangan-jima <Sangan-jima oomizunagidori oyobi himekuro-umitsubame hansyoku-chi (in Japanese)>
Kugunari beach and Kukunaki beach <Kugunari-hama oyobi kukunaki-hama (in Japanese)>
Nesting site of Black-tailed Gull (Larus crassirostris) in Tubaki-jima <tsubaki-jima umineko hansyoku-chi (in Japanese)> 
Nesting site of Madeiran Fork-tailed Petrel (Oceanodroma castro) in Hide-jima <Hide-jima kuro-koshijiro umitsubame hansyoku-chi (in Japanese)>
Nesting site of Black-tailed Gull (Larus crassirostris) and Rhinoceros Auklet (Cerorhinca monocerata) in Rikuzen-enoshima <Rikuzen-enoshima no umineko oyobi utou hansyoku-chi (in Japanese)>

* 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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