"sea sapphire" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions nominales en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "sea sapphires",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Crustacés en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en anglais à traduire",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Définitions manquantes en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Jason Bittel,Sea Sapphires and 5 Other Shiny Ocean Creatures National Geographic le 29 mars 2017",
          "text": "A thousand feet below the waves, tiny ocean crustaceans known as sea sapphires dance about like microscopic disco balls. But at the water’s surface, where they feed, these copepods are all but invisible."
        }
      ],
      "glosses": [
        "Définition manquante ou à compléter. (Ajouter)"
      ],
      "id": "fr-sea_sapphire-en-noun-HZ5rnInw",
      "topics": [
        "oncology"
      ]
    }
  ],
  "word": "sea sapphire"
}

{
  "categories": [
    "Locutions nominales en anglais",
    "anglais"
  ],
  "forms": [
    {
      "form": "sea sapphires",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Crustacés en anglais",
        "Exemples en anglais",
        "Exemples en anglais à traduire",
        "Wiktionnaire:Définitions manquantes en anglais"
      ],
      "examples": [
        {
          "ref": "Jason Bittel,Sea Sapphires and 5 Other Shiny Ocean Creatures National Geographic le 29 mars 2017",
          "text": "A thousand feet below the waves, tiny ocean crustaceans known as sea sapphires dance about like microscopic disco balls. But at the water’s surface, where they feed, these copepods are all but invisible."
        }
      ],
      "glosses": [
        "Définition manquante ou à compléter. (Ajouter)"
      ],
      "topics": [
        "oncology"
      ]
    }
  ],
  "word": "sea sapphire"
}