Everglades National Park plans to restrict motorized boating on Florida Bay, designate additional land as wilderness and make the park more accessible to visitors as part of the first overhaul of its management plan in more than 30 years.

The plan, which is final but will be implemented gradually, will prohibit boaters from using their main engines or require them to go at idle speed on about one third of the bay, in an attempt to prevent their propellers from destroying the seagrass beds that form the base of the bay’s food chain.

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