On 18 September 887, at the foot of the mountain Biokovo, in the waters of Makarska, there was an open battle called the Battle
of Muculus (also: Battle of Makarska, a coastal city historicaly known as Inaronia, Aronia, Muccurum, Mokro, Makar, Makarska).
Mariani (Morjani, Sea People), residents of the Croatian medieval maritime county that included the islands of Brac, Hvar and Vis,
disastrously defeated the Venetian fleet in their attack of the city.
To commemorate this important victorious battle from the time of the Ban (lat. comes) and Knez (lat. dux, en. duke)
Branimir of Croatia reign (879-892), that day is celebrated as the Day of the Croatian Navy (Dan Hrvatske ratne mornarice).
The Venetians, led by the Doge Pietro I Candiano, set off with 12 galleys in order to conquer central Dalmatia. His forces sank five
Croatian ships and killed a group of natives at the Port of Mokro. After landing ships and his forces, he chased the Marians,
advancing deeper inland. After the initial surprising with attack by invaders, the local warriors-sailors very famous for their skills
and bravery long before, on 18 September 887 violently strike. It completely shattered the Venetian army and fleet, and the
Doge Pietro I Candiano lost his life along with 7 of his sailors. Even his body remained in the hands of Neretvanians, so the
Venetian tribune Andrew had to steal the Dodge's corpse to keep it buried in the Cathedral of St. Mark in Venice.
After this event, the longlasting peace between the Venetians and Croats dominated, Croatia rises to internationally recognized
kingdom in 923/925. For their safe navigation through the Croatian part of the Adriatic Sea, the Venetians had to pay regular
annual levies - for next more than hundred years.