The Khroma River is a river in the Sakha Republic (Yakutia) of the Russian Federation. It crosses the tundra roughly northeastwards and flows into Khromskaya Bay

Khromskaya Bay

The Khromskaya Bay or Khroma Bay is a bay in the East Siberian Sea west of the Sundrun River region and east of the Yana Bay.The bay is open to the northeast through a narrow and straight channel and is 130 km in length. Its maximum width is about 30 km and it has a branch or inlet...

 which is connected with the East Siberian Sea

East Siberian Sea

The East Siberian Sea is a marginal sea in the Arctic Ocean. It is located between the Arctic Cape to the north, the coast of Siberia to the south, the New Siberian Islands to the west and Cape Billings, close to Chukotka, and Wrangel Island to the east...

. Owing to its extreme northerly location the Khroma River freezes up in early October and remains icebound until June.

Wetlands

The Kytalyk Wetlands, located between the Khroma and the Sundrun River

Sundrun River

The Sundrun River is a river in the Sakha Republic of the Russian Federation. It crosses the tundra first in a roughly eastern and then, more than halfway through its course, in a northern direction. It flows into the East Siberian Sea at the western end of the Kolyma Bay...

 (Khroma-Sundrun Interfluvial Area) is an ecologically important area, providing a favorable habitat for many rare animals. The region is practically uninhabited and full of lakes and marshes. Wild reindeer

Reindeer

The reindeer , also known as the caribou in North America, is a deer from the Arctic and Subarctic, including both resident and migratory populations. While overall widespread and numerous, some of its subspecies are rare and one has already gone extinct.Reindeer vary considerably in color and size...

, Siberian crane

Siberian Crane

The Siberian Crane also known as the Siberian White Crane or the Snow Crane, is a bird of the family Gruidae, the cranes...

s, Canadian crane

Sandhill Crane

The Sandhill Crane is a large crane of North America and extreme northeastern Siberia. The common name of this bird references habitat like that at the Platte River, on the edge of Nebraska's Sandhills in the American Midwest...

s, marsh sandpiper

Marsh Sandpiper

The Marsh Sandpiper, Tringa stagnatilis, is a small wader. It is a rather small shank, and breeds in open grassy steppe and taiga wetlands from easternmost Europe to central Asia....

s and Ross's gull

Ross's Gull

The Ross's Gull is a small gull, the only species in its genus, although it has been suggested it should be moved to the genus Hydrocoloeus, which otherwise only includes the Little Gull....

s are abundant in the Khroma River wetlands.

The lesser white-fronted goose

Lesser White-fronted Goose

The Lesser White-fronted Goose is a goose closely related to the larger White-fronted Goose .It breeds in northernmost Asia, but it is a scarce breeder in Europe. There is a re-introduction scheme in Fennoscandia....

, Brent goose

Brent Goose

The Brant or Brent Goose, Branta bernicla, is a species of goose of the genus Branta. The Black Brant is an American subspecies. The specific descriptor bernicla is from the same source as "barnacle" in Barnacle Goose, which looks similar but is not a close relation.-Appearance:The Brant Goose is...

, Bewick's swan

Bewick's Swan

The Tundra Swan is a small Holarctic swan. The two taxa within it are usually regarded as conspecific, but are also sometimes split into two species, Cygnus bewickii of the Palaearctic and the Whistling Swan, C. columbianus proper, of the Nearctic...

 and the spectacled eider

Spectacled Eider

The Spectacled Eider is a large sea duck that breeds on the coasts of Alaska and northeastern Siberia.The lined nest is built on tundra close to the sea, and 5–9 eggs are laid. This species dives for crustaceans and molluscs...

are also found in the Khroma-Sundrun Interfluvial Area.

Gold and tin mining upriver are affecting the ecology of the region by destroying fish and bird habitat.