"maré vermelha" meaning in Portuguese

{
  "forms": [
    {
      "form": "marés vermelhas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "maré vermelha f (plural marés vermelhas)",
      "name": "pt-noun"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "red tide (poisonous algal bloom)"
      ],
      "id": "en-maré_vermelha-pt-noun-2w9AY2Nv",
      "links": [
        [
          "red tide",
          "red tide"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "word": "maré vermelha"
}

{
  "forms": [
    {
      "form": "marés vermelhas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "maré vermelha f (plural marés vermelhas)",
      "name": "pt-noun"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Portuguese countable nouns",
        "Portuguese entries with incorrect language header",
        "Portuguese feminine nouns",
        "Portuguese lemmas",
        "Portuguese multiword terms",
        "Portuguese nouns"
      ],
      "glosses": [
        "red tide (poisonous algal bloom)"
      ],
      "links": [
        [
          "red tide",
          "red tide"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "word": "maré vermelha"
}