Skip the menu

MOE home > Nature and Parks > EBSA home > Coastal Area > 10202 Okhotsk coast


Coastal Area 10202 Okhotsk coast

Basic Information A separate window opensReferences

Relevant municipalities Okoppe, Shari, Koshimizu, Kitami, Abashiri, Monbetsu, Yubetsu, Hokkaido Prefecture
Area (km2) 452

Reason(s) for selection A separate window opensCriteria

Selected due to high levels for the criteria 1, 2, 6 and selected by MARXAN software.

Characteristics A separate window opensReferences

These massive sandy shores, including numerous natural beaches, extend along the Sea of Okhotsk coast from Monbetsu to the Shiretoko Peninsula (not including Cape Notoro). One feature that makes these sandy shores distinctive is the intermittent string of coastal lakes extending east from the city of Monbetsu, including Lake Komuke, Lake Shibunotsunai, Lake Saroma, Lake Notoro, Lake Mokoto, Lake Tofutsu, and others. The coastal areas of these lakes are highly diverse (Suda, personal communication). Their bird populations are particularly diverse, including numerous Laridae such as slaty-backed gull, glaucous-winged gull, black-legged kittiwake, and others, and raptors such as Steller's sea eagle, osprey, peregrine falcon, and others. The vicinity of Lake Komuke sees large populations of numerous species during the spring and fall migrations of Scolopacidae Rafinesque and plovers, and at least 1% of the minimum estimated population of the red-necked phalarope and at least 0.25% of those of the lesser sand plover, Numenius phaeopus, and dunlin have been recorded here (Ministry of the Environment, 2001). Communities of common glasswort are visible in the coastal areas near the coastal lakes, as are Zostera caespitosaand Zostera japonica eel grass beds. Lake Saroma in particular is home to Japan’s largest lagoon eel grass beds, and there are remains of oyster reefs on the lake bottom. It is an important habitat for the Japanese scallop, Hokkai shrimp, oyster, and others (Ministry of the Environment, 2001). Also to be seen are mammals such as the ringed seal, ribbon seal, spotted seal, and others, and in the river mouth areas there are Dolly Varden trout, three-spined stickleback (swimming downstream to the sea) and others. In the winter, numerous pinnipeds and raptors can be seen as ice floes approach the coast. The ice floes also give the area a unique, highly productive environment. Offshore, the Okhotsk dichothermal water layer results in increased productivity (Suda et al., 2000; Hiwatari et al., 2003; Suda et al., 2004; Hiwatari et al., 2004; Hiwatari et al., 2005; Suda et al., 2005).

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2) 4.1
Moba (seaweed bed) (km2) 14.1
Coral reef coverage (km2)
Natural coast (km) 121.6
Rate of natural coast (%) 76.3
Sand bank / submerged sand bank
Other habitats

Species information (*) A separate window opensData source

Criteria 1
Phoca largha (Larga Seal (Spotted Seal))
Phoca hispida (Ringed Seal)
Haliaeetus pelagicus (Steller's Sea-eagle)
Riparia riparia (Sand Martin)
Salvelinus malma (Dolly varden)
<Vascular Plants>
Zostera caespitosa
Criteria 2
Sterna hirundo (Common Tern)
Sterna hirundo (Common Tern)[Br/Ne]
Monticola solitarius (Blue Rock-thrush)[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]
Larus canus (Mew Gull )
Charadrius dubius (Little Ringed Plover)[Br/Ne]
Riparia riparia (Sand Martin)[Br/Ne]
Larus hyperboreus (Glaucous Gull)
Charadrius alexandrinus (Kentish Plover)[Br/Ne]
Larus argentatus (European Herring Gull)
Falco peregrinus (Peregrine Falcon)[Br/Ne]
Pandion haliaetus (Osprey)[Br/Ne]
Rissa tridactyla (Black-legged Kittiwake)
Larus ridibundus (Black-headed Gull)
Larus glaucescens (Glaucous-winged Gull)
Ammodytes personatus (Japanese sand lance)[Sp]
Sebastes schlegelii (Korean rockfish)[Sp]
Theragra chalcogramma (Alaska pollock)[Sp]
Clupea pallasii (Pacific herring)[Sp]
Arctoscopus japonicus (Japanese sandfish)[Sp]
Pleurogrammus azonus (Okhotsk atka mackerel)[Sp]
Gadus macrocephalus (Pacific cod)[Sp]
Criteria 3
Histrionicus histrionicus (Harlequin Duck)
Salvelinus malma (Dolly varden)
Lethenteron japonicum (Japanese lamprey)
Deiratonotus cristatus
<Vascular Plants>
Salicornia europaea (Common Glasswort)
Criteria 7
Lethenteron japonicum (Japanese lamprey)
Gastersosteus aculeatus aculeatus (Three-spined stickleback)
<Other invertebrate>
Urechis unicinctus
<Vascular Plants>
Salicornia europaea (Common Glasswort)
Zostera marina (Eel grass)
Zostera 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


Back to the top of this page