Hülgerahu is a small, uninhabited, moraine-based

Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and ...

island belonging to the country of

Estonia Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the sea across from Sweden, to the south by Latvia, a ...

. Hülgerahu covers approximately 0.15 hectares and lies just off the eastern coast of the larger island Kõverlaid. The island belongs to both Hiiumaa Islets Landscape Reserve and The Laidelaht Wilderness Area and is closed to the public. Its beaches are an important breeding ground for birds and marine mammals such as

grey seal The grey seal (''Halichoerus grypus'') is found on both shores of the North Atlantic Ocean. In Latin Halichoerus grypus means "hook-nosed sea pig". It is a large seal of the family Phocidae, which are commonly referred to as "true seals" or " ...

s.Looduspiltnik - sinasõber metsa - ja merehaldjatega.''
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Estonian islands in the Baltic Hiiumaa Parish Uninhabited islands of Estonia {{Hiiu-geo-stub