In recent years, a sharp rebound in the number of sea lions on the West Coast has triggered a battle for protected animals. From a safe distance, they are both smart and fun, but also noisy and smelly, and are a headache for some coastal docks. \"It\'s a free Zoo, just don\'t touch them! Olympia\'s Dennis Craig observed while watching a dock at the West Port Dock in Washington that dozens of burly Bulls pushed jo and napping in the sun and almost sank. \"You\'ll notice that when the charter comes in they swing wide so that people can look at it up close because, like I said, it\'s fun,\" Craig said . \". The other side of these fin-like fish can be seen in the installation bill of the dock, including the destroyed dock, the broken electrical pillar and the cost of the lost business. \"Almost all of our net income has been used to repair the losses caused by sea lions this year, taking the funds from infrastructure improvements and replacements that are critical to the marina facilities and our users, molly boulder, business manager at Port West Quay, said in an email. Sea lions stop people from berthing ships. In other cases, commercial fishermen have to challenge through sea lions in order to board their ships. The Westport Aquarium said the sea lion even took a few pet dogs off the dock. Master Mark Mercer, who volunteered to monitor marine mammals. Myrsell counted up to 200 or 300 sea lions on the dock at one time. \"If a person walks on the dock with a bag in his hand, in its mind, sea lions may think that people have food and will become aggressive because some people have been feeding them -- In an interview, Myrsell said: \"intentional or unintentional. The latest number of sea lions in California on the west coast of the United States is estimated to be about 257,000. Robert Anderson, marine mammals program manager, NOAA Fisheries regional office, Portland, Oregon, believes that population growth is about 5% per year, although sea lions may soon reach the carrying capacity of their marine environment. At present, the number of sea lions is at least 7 times the number recorded at the end of 1960. Before Congress passed the Marine Mammal Protection Act in 1972, fishermen and the public could shoot the pesky sea lions themselves. In the first few decades, the beasts were also killed to get the skins or make pet food. Now, the proliferation of sea lions has caused problems from Neah Bay, Washington, to Brookings, Oregon. Occasionally in Puget Sound. The West Port of Washington is not even the worst. According to interviews with port staff and the National Oceanic and Atmospheric Administration, Estalia, Oregon has attracted the largest number of sea lions to date. A fiberglass fake killer whale was deployed in Port Astoria to scare sea lions. The replica soon capsized and almost overwhelmed its operators. The hotel also tried the subway. Inflatable aerial dancers in shape, beach balls, flash lights, and low railings with various plastic accessories. Jim Knight, executive director of port Astoria, said in an interview on Thursday: \"Nothing works for a long time, or the cost is too high . \". The local sea lion census, which peaked around 3,000 two years ago, is now lower, he said. Floating port docks provide a convenient place to rest for California and the stone sea lions, who can fish on the Columbia River. Knight says the most effective deterrent is Voltage live mat for demonstration deployment in Vancouver, Washington- Manufacturer Smith- The hotel is located in Astoria and Westport. \"It does work,\" Knight said . \". \"But their costs are far beyond the capacity of the port. The Curry Sport Fishing Association on the southern coast of Oregon and the Gold Coast Gangli use private donations and small grants to hire civilian patrol personnel to scare off sea lions and not let people fishing on the Rogue River --Autumn salmon run When sea lions were too close to leisure fishermen at the mouth of the river, the water sea lion patrol was allowed to throw underwater firecrackers, known as \"sealed bombs \". Otherwise, sea lions catch fish hook salmon before athletes can catch their fish. Anderson of Mar said that the problem with the dock is still going on, because the sea lions are smart and will get used to most deterrence strategies. \"You have to be very persistent about it,\" Anderson said in an interview . \". \"Once you have taken any deterrent approach, they will come back right away if you walk away. Anderson said that when Port officials called him for advice on sea lions, he gave a long list of non-lethal options. \"You will definitely stimulate and aggravate the animals very strongly,\" Anderson explained . \". \"I mean, these animals are very durable. \"But he also highlighted the restrictions imposed by the federal Marine Mammal Protection Act, which boils down to: you can\'t do anything that could lead to serious injury or death. In the West Port of Washington, the Port Authority has tried to use low Flight drones, noise makers, water pipes and the above low Voltage charged mat as countermeasure. It is now considering physical barriers, but is cautious about costs. This means that on the dock, tourists like Dennis Craig are still singing serenades by a group of screaming sea lions. Craig and his grandchildren are doing some casual crab hunting on the Easter weekend. \"You know, I don\'t see anything bad about them because we\'re on their territory, not the other way around,\" Craig said . \". \"They were here before we started building. \"The mood of local fishing communities and port offices is not very tolerant. \"The frustration is very, very high,\" says Myrsell . \". The federal government allows Oregon and Washington state to capture and kill sea lions that live on endangered fish near the willamit River and the Bonneville Dam under willamit falls. But those fatal control licenses are limited to those places. Last fall, a special working group on killer whales, a southern resident in Washington, sparked discussions called reducing competition for food with endangered killer whales, and sea lions and seals could become wider. Just last week, the Washington Legislature discovered the clue, when the two-party State SenatorsSponsoring a non Binding Letter to President Donald Trump and President of the United StatesS. Minister of Commerce and Interior The state Senate resolution called on the federal government to take action to limit sea lions and seals to \"prey on salmon and other fish\" in all waters of Gette Bay and Washington \". \"Recent scientific research has shown that sea lions and seals collectively eat a large number of Chinook salmon, which is needed for the survival of endangered killer whales in the northwest of the Pacific Ocean. However, while it is often observed that sea lions eat salmon, Myrsell says that most of their diets in the western port area are anchovies, sardines and herring.