Read the text carefully, then choose the correct answers.
Laxey Bay on the east coast of the Isle of Man is home to a diverse array of wildlife, including breeding gulls, eiders, black guillemots, choughs, oystercatchers, and peregrines. The bay has seen 99 different bird species, including eiders, black guillemots, choughs, oystercatchers, and peregrines. Nesting gulls winter in Africa, replaced by bottlenosed dolphins from Wales. The bay also hosts small-spotted cat sharks and the ocean quahog, a rare species in Britain and Ireland.
Laxey Bay was designated a marine nature reserve in 2018, as part of the Isle of Man's international commitment to protect 30% of the seas by 2030. However, this designation does not guarantee safety from harm, as destructive fishing practices still occur in such areas. Even potting and anchoring are banned in some areas, leading to a race to be the first to fish up to the reserve boundary. Protecting bays like this leads to larger and more abundant shellfish outside them.
However, there is a sinister aspect to this success, as just a stone's throw from where children swim is a never-ending flow of raw sewage. Politicians pledged to stop the flow three decades ago, but this criminality continues. The question remains: when will we finally give the natural world the respect it deserves?
Question: What is one of the reasons behind the marine nature reserve designation of Laxey Bay?