You will be given a definition of a task first, then some input of the task.
Generate an explanation for the given claim using the provided supporting material from the paragraph. Please consider the following points while generating an output. 1) The claim will always have supporting proof in the paragraph, and the paragraph will have a clear point of view supporting the claim. 2) There can be instances where direct correlation to the claim is not available. Make use of the sentences in the paragraph to provide a corresponding output supporting the claim. 3) The explanation should be at least one and at most twelve sentences long.

Paragraph: The Mississippi Department of Environmental Quality late Friday lifted water contact warnings that were issued Aug. 6. Warnings also were lifted for Pass Christian Harbor, Long Beach Harbor and Bay St. Louis Harbor. All summer long, harmful blue-green algae blooms have plagued the coast. MDEQ says recent results indicated that while the bloom was present and/or in bloom, many of the cells were dying. MDEQ moved to the toxicity testing phase of the protocol this week. Sampling results, officials say, were all below the EPA guidelines set to protect public health. Claim: Mississippi Coast beaches open, contact advisories lifted.
Output:
All 21 beaches along the Mississippi Gulf Coast are open after being closed this summer for a harmful algae bloom.