More than 50 dead ducks, rats and plaice found in picturesque boating lake Experts from Environment Agency and council have yet to explain deaths But experts have ruled out deadly blue-green algae as a possible cause More than 50 animals have died mysteriously in a picturesque boating lake. Duck, rat and plaice bodies have all been found in the family-friendly park. The Environment Agency is carrying out tests at Brooklands Pleasure Park in Worthing, West Sussex, but the deaths remain unexplained. Corpses: More than 50 ducks, rats and plaice have been discovered in a picturesque family boating lake Brooklands Pleasure Park: A popular park area for families in Worthing, West Sussex Mysterious: The Environment Agency and local council have yet to discover what lies behind the deaths Experts have ruled out the theory that deadly blue-green algae is to blame. Worthington Borough Council has also investigated the deaths, but concluded the cause of death was "not apparent." Senior animal rescue officer Billy Elliott, from Worthing and District Animal Rescue Service, said: "I have been down to the lake every day for the past three weeks and have had to pull out at least two dead animals a day. The situation has never been this bad before. Our charity is meant to help the animals before it is too late, and I feel like we are letting them down. Just last week a mother came down with her child to feed the ducks, and was horrified to discover dead floating ducklings. Ruled out: Experts have said deadly blue-green algae is not to blame for the deaths Joe Giacomelli, at the Environment Agency, said: "Our investigations into this incident are ongoing as it is too early to draw any conclusion on its cause. Last week we took water samples and these initial tests ruled out the presence blue green algae at that time. We are awaiting results of further samples to ascertain whether any pollutant caused this or whether it was a natural event. A spokesperson at Worthing Borough Council said the council could not afford to dredge the lake.