This text is for questions 18 to 21.

    Karimunjawa is an archipelago of 27 islands in the Java Sea, stretching approximately 83 kilometers northwest of Jepara, Central Java. It consists of small islands, mostly uninhabited, with five inhabited ones: Karimunjawa, Kemujan, Nyamuk, Parang, and Genting.

    The name of Karimunjawa was derived from the Javanese language "kremun kremun saking tanah Jawi" as addressed by one of Wali Songo. The name describes how far these islands from Java.

    Designated as a national marine park, Karimunjawa is home to mangrove, coastal forests and a great variety of marine animals, such as crabs, starfish, sharks, stingray, jellyfish, red snappers, etc. It is also a popular tourist destination with its white sandy beaches, pristine coral reefs and challenging treks through the hills. The reefs are a mixture of fringing and barrier, and patched with bottom depths ranging between 15 and 40 meters.

    The islands offer stunning diving and snorkeling trips. Fringing reefs, atolls, wrecks and an excellent variety of species make diving in Karimunjawa an unforgettable adventure.

Adopted from: https://web.archive.org/web/20200414070237/https://www.indonesia-tourism.com/central-java/karimunjawa.html (February 13, 2021)

"Designated as a national marine park, ..." (Paragraph 3)

What does the word "designated" mean?