"sand shark" meaning in English

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      "expansion": "sand shark (plural sand sharks)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Lamniform sharks",
          "orig": "en:Lamniform sharks",
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            "Sharks",
            "Fish",
            "Vertebrates",
            "Chordates",
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      "glosses": [
        "A mackerel shark of the family Odontaspididae."
      ],
      "id": "en-sand_shark-en-noun-nrksQeU2",
      "links": [
        [
          "mackerel shark",
          "mackerel shark"
        ],
        [
          "Odontaspididae",
          "Odontaspididae#Translingual"
        ]
      ],
      "synonyms": [
        {
          "word": "sand tiger shark"
        },
        {
          "word": "gray nurse shark"
        },
        {
          "word": "ragged tooth shark"
        }
      ],
      "wikipedia": [
        "sand shark"
      ]
    }
  ],
  "word": "sand shark"
}

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    {
      "form": "sand sharks",
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A mackerel shark of the family Odontaspididae."
      ],
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        ],
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          "Odontaspididae",
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      "synonyms": [
        {
          "word": "sand tiger shark"
        },
        {
          "word": "gray nurse shark"
        },
        {
          "word": "ragged tooth shark"
        }
      ],
      "wikipedia": [
        "sand shark"
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    }
  ],
  "word": "sand shark"
}