Fifty-two anthozoan species were recorded and collected in the area of Mljet National Park during surveys from 1995 to 1998. General and ecological data are presented for each species, as well as distribution and local abundance. Recorded species account for about 60% of anthozoans known in the Adriatic Sea, and for about 45% of anthozoans known in the Mediterranean Sea. Eight of these species were not recorded previously in the Adriatic Sea. Eleven species are considered to be Mediterranean endemics. The heterogeneity of substrates and benthic communities is considerable in the Mljet National Park, with anthozoans present on most different kinds of substrates and in a wide range of benthic communities. Remarkably, the colonial coral Cladocora caespitosa builds a large »reef-like« structure in the Veliko Jezero, in the area characterized by strong bottom hydrodynamism.Prilikom istraživanja podmorskog dijela Nacionalnog parka Mljet od 1995. do 1998. godine zabilježene su i sakupljene 52 vrste koralja. Za svaku vrstu izneseni su opći i ekološki podaci, te su zabilježeni nalazi i lokalna brojnost. Pronađene vrste predstavljaju oko 60% dosad pronađenih koralja u Jadranskom moru i oko 45% u Sredozemnom moru. Osam vrsta koralja pronađeno je po prvi put u Jadranskom moru, dok se jedanaest vrsta smatra endemima Sredozemnog mora. U Nacionalnom parku Mljet nalazimo razne vrste podloga i razne bentoske zajednice, te koralji pokazuju značajne prilagodbe na različite podloge i prilike u okolišu. Dobar primjer za to je kolonijalni koralj Cladocora caespitosa koji tvori »greben« u Velikom Jezeru, u okolišu s jakim pridnenim morskim strujama
