Bournemouth Oceanarium is celebrating its 25th anniversary this year. 

A special event will he held this weekend to mark the milestone

The Oceanarium opened back on September 4, 1998 and soon after visitors arrived in their thousands.

Less than a year later and the coral reef feature was added, providing groups with touch tanks.

Youngsters enjoyed sleeping with the fishes when a large science sleepover was held among the tanks.

Summerbee junior school pupil competition winner Katharine Davies at Bournemouth Oceanarium.

Summerbee junior school pupil competition winner Katharine Davies at Bournemouth Oceanarium.

Mike Hill raised cash for charity when he embarked upon a 24hr sponsored dive with the sharks.

The photographs were taken of the public and staff enjoying the aquarium over the years.