St Michael's Mount replacing the pack horses which had previously been used. Its steep gradient renders it unsafe for passenger-use, thus The National Trust has made it out-of-bounds for public access. The causeway between the mount and Marazion was improved in 1879 by raising it by with sand and stones from the surrounding area. Repairs were completed in March 2016 following damage from the 2014 winter storms. Some studies indicate that any rise in ocean waters as well as existing natural erosion would put some of the Cornwall coast at risk, including St. Michael's Mount. Until recent times both the mount and the
Piracy off the coast of Somalia fishing trawlers, which have for decades deprived local dhows of a livelihood. According to marine biologists, indicators are that the local fishery is recovering because of the lack of commercial-scale fishing. Piracy off the coast of Somalia also appears to have a positive impact on the problem of overfishing in Somali waters by foreign vessels. A comparison has been made with the situation in Tanzania further to the south, which is also affected by predatory fishing by foreign ships and generally lacks the means to effectively protect and regulate its territorial waters. There, catches have dropped to dramatically low levels,