THEIR mission is to explore underwater worlds, protect the ocean and rescue sea creatures.

Next Tuesday the Octonauts will be making a splash at the Moncrieff Entertainment Centre with their Octonauts Live! Operation Reef Shield show.

Bundaberg Regional Council sport, recreation and venues spokeswoman Lynne Forgan said dozens of the region's young Octonauts fans helped celebrate the upcoming show with a free activities morning on June 25.

"In celebration of the upcoming Octonauts performance at the Moncrieff, free activities were enjoyed by children at Bundaberg Regional Library including craft and colouring-in activities and prizes for best dressed young explorers," Cr Forgan said.

"I have no doubt that it will prove very exciting for the young fans to see these characters come to life in a musical adventure."

Tickets start from $24.90 and can be bought at the box office, online at moncrieff-bundaberg.com.au or by phoning 4130 4110.