Question: The Baltic League includes clubs from the country bordered to the north by what body of wter?

Context paragraphs:
Baltic League (ice hockey): The Baltic League was an ice hockey league that existed for the 2000–01 season.  The three Baltic countries, Latvia, Lithuania, and Estonia sent teams.  The league was not repeated after the 2000–01 season, however, a Baltic Cup was played for the 2004–05 season.

Danish Australian Football League: The Dansk Australsk Fodbold Liga (Eng: Danish Australian Football League) is the controlling body and main league for the sport of Australian rules football in Denmark.  Founded in 1989, regular competition commenced in 1991.  Despite being predominantly Danish, the league includes clubs in Scania (Swedish: "Skåne", southernmost region of Sweden).

2010–11 Baltic League: The 2010–11 Baltic League (known as the "Triobet Baltic League" for sponsorship reasons) is a 16-team football tournament held in the Baltic states.  Five top teams from each participating country – Estonia, Latvia, and Lithuania – along with the winner of the 2009–10 season will play a 4 round and 2 legged (excluding final) play-off style knockout tournament.  It is held from Autumn 2010 through Summer 2011.

Estonia: Estonia ( ; Estonian: "Eesti" ), officially the Republic of Estonia (Estonian: "Eesti Vabariik" ), is a country in the Baltic region of Northern and Eastern Europe.  It is bordered to the north by the Gulf of Finland, to the west by the Baltic Sea, to the south by Latvia (343 km), and to the east by Lake Peipus and Russia (338.6 km).  Across the Baltic Sea lies Sweden in the west and Finland in the north.  The territory of Estonia consists of a mainland and 2,222 islands in the Baltic Sea, covering 45339 km2 of land and water, and is influenced by a humid continental climate.  Ethnic Estonians are a Finnic people, sharing close cultural ties with their northern neighbour, Finland, and the official language, Estonian, is a Finno-Ugric language closely related to Finnish and the Sami languages, and distantly to Hungarian.

Muskerry GAA: Muskerry GAA is a Gaelic football and Hurling division located in the middle region of County Cork, Ireland.  It is one of eight divisions of Cork GAA County Board.  The division includes clubs from areas to the west of Cork city stretching to the county bounds with Kerry.  Its name is derived from the ancient Gaelic kingdom of Múscraige which, following the Norman conquest, now encompasses the baronies of Muskerry West and Muskerry East.  These baronies, or half-baronies, include towns such as Macroom, Ballincollig, and Ballingeary.  Muskerry GAA is bordered by Carrigdhoun GAA and Carbery GAA divisions to the south and by Duhallow GAA to the north.  It organizes competitions for the clubs within the division, from "Under 12" up to the adult level.  The winners of these competitions compete against other divisional champions to determine which club is the county champion.  In addition, the division selects football and hurling teams from the adult teams playing at junior level or county intermediate level; these then compete for the Cork Senior Football Championship and Cork Senior Hurling Championship.

2009–10 Baltic League: The 2009–2010 Baltic League (known as the "Triobet Baltic League" for sponsorship reasons) is a 16-team football tournament held in the Baltic states.  Five top teams from each participating country – Estonia, Latvia, and Lithuania – along with the winner of the 2008 season will play a 4 round and 2 legged (excluding final) play-off style knockout tournament.  It is held from Autumn 2009 through Summer 2010.

2008 Baltic League: The 2008 Baltic League (known as the 2008 Triobet Baltic League for sponsorship reasons) was the second Baltic League football tournament.  The tournament took place in the Baltic states in 2008.  The first matches took place on 4 March.

2007 Baltic League Final: The 2007 Baltic League Final (officially known as the 2007 Triobet Baltic League Final) was the final of the first ever Baltic League.  It was played on November 8 and November 11, 2007 between Latvian teams FK Ventspils and Liepājas Metalurgs.  Liepājas Metalurgs won the two matches 8–2 (3–1 and 5–1) on aggregate.

2007 Baltic League: The 2007 season of Baltic League (known as the TrioBet Baltic League for sponsorship reasons) was the first edition of the Baltic League.  The competition was won by Liepājas Metalurgs of Latvia, who beat fellow Latvians FK Ventspils 8–2 on aggregate in the final, which was spread over two legs on 8 November 2007 and 11 November 2007.

Baltic League: The Baltic League (officially known as the Triobet Baltic League) was a Baltic football club tournament held four times between the top club sides from Estonia, Latvia and Lithuania.  Launched in 2007 inspired by the now defunct Scandinavian tournament Royal League and by the Baltic Basketball League.

Supporting paragraphs: Baltic League Estonia
Answer: Gulf of Finland