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  1. Mysteries of the Manta Ray:5 Astonishing Facts! #OceanFacts #UnderwaterWorld #WildlifeDocumentary.

    Mysteries of the Manta Ray:5 Astonishing Facts! #OceanFacts #UnderwaterWorld #WildlifeDocumentary.

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  4. US TESTS GIANT ‘MANTA RAY’ SUBMARINE DRONE FOR UNDERWATER MISSIONS

    US TESTS GIANT ‘MANTA RAY’ SUBMARINE DRONE FOR UNDERWATER MISSIONS

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