Police said they struggled to contain the violent scenes as young people of African appearance fought each other and assaulted bystanders just before 3am.

Disturbing video footage of the brawl has emerged that shows young men and women kicking and punching each other.

Police said the large gang were wanted over a series of robberies and assaults at the beach and surrounding areas, which started about 11pm on Wednesday night.

A 16-year-old boy and his friends were allegedly punched in the face and robbed on the foreshore with youths stealing their phones, watches and the shirts off their backs.

His father Alex Carter said his son had been left traumatised by the alleged assault.

"They left them standing half nude in the street," Mr Carter told Channel 7.

"These guys are so clever the way they do it (the robberies), that it just sort of looks like a couple of teenagers having a bit of fun."

Police were called to The Esplanade about 2.55am after 60 youths trashed a McDonald's restaurant, throwing chairs and smashing a window.

"Unfortunately last night we had a large number of youth attend, of African appearance, who have engaged in anti-social behaviour," Inspector Jason Kelly told reporters on Thursday.

"Their behaviour was just totally unacceptable and I'd call on them to come forward and hand themselves in before we track them down."

Anyone with any information or footage is urged to contact Crime Stoppers on 1800 333 000.