diff --git a/frontend/src/data/zones/fishing-zones-wgs84.json b/frontend/src/data/zones/fishing-zones-wgs84.json
index dab77a9..070f335 100644
--- a/frontend/src/data/zones/fishing-zones-wgs84.json
+++ b/frontend/src/data/zones/fishing-zones-wgs84.json
@@ -3,35 +3,151 @@
   "features": [
     {
       "type": "Feature",
-      "properties": { "id": "ZONE_I", "zone": "I", "name": "특정어업수역 I (동해)" },
+      "properties": {
+        "id": "ZONE_I",
+        "zone": "I",
+        "name": "특정어업수역 I (동해)"
+      },
       "geometry": {
-        "type": "Polygon",
-        "coordinates": [[[128.86, 35.65], [131.67, 35.65], [131.67, 38.25], [128.86, 38.25], [128.86, 35.65]]]
+        "type": "MultiPolygon",
+        "coordinates": [
+          [
+            [
+              [
+                128.86,
+                35.65
+              ],
+              [
+                131.67,
+                35.65
+              ],
+              [
+                131.67,
+                38.25
+              ],
+              [
+                128.86,
+                38.25
+              ],
+              [
+                128.86,
+                35.65
+              ]
+            ]
+          ]
+        ]
       }
     },
     {
       "type": "Feature",
-      "properties": { "id": "ZONE_II", "zone": "II", "name": "특정어업수역 II (남해 제주남방)" },
+      "properties": {
+        "id": "ZONE_II",
+        "zone": "II",
+        "name": "특정어업수역 II (남해 제주남방)"
+      },
       "geometry": {
-        "type": "Polygon",
-        "coordinates": [[[126.00, 32.18], [128.89, 32.18], [128.89, 34.34], [126.00, 34.34], [126.00, 32.18]]]
+        "type": "MultiPolygon",
+        "coordinates": [
+          [
+            [
+              [
+                126.0,
+                32.18
+              ],
+              [
+                128.89,
+                32.18
+              ],
+              [
+                128.89,
+                34.34
+              ],
+              [
+                126.0,
+                34.34
+              ],
+              [
+                126.0,
+                32.18
+              ]
+            ]
+          ]
+        ]
       }
     },
     {
       "type": "Feature",
-      "properties": { "id": "ZONE_III", "zone": "III", "name": "특정어업수역 III (서남해 이어도)" },
+      "properties": {
+        "id": "ZONE_III",
+        "zone": "III",
+        "name": "특정어업수역 III (서남해 이어도)"
+      },
       "geometry": {
-        "type": "Polygon",
-        "coordinates": [[[124.01, 32.18], [126.08, 32.18], [126.08, 35.00], [124.01, 35.00], [124.01, 32.18]]]
+        "type": "MultiPolygon",
+        "coordinates": [
+          [
+            [
+              [
+                124.01,
+                32.18
+              ],
+              [
+                126.08,
+                32.18
+              ],
+              [
+                126.08,
+                35.0
+              ],
+              [
+                124.01,
+                35.0
+              ],
+              [
+                124.01,
+                32.18
+              ]
+            ]
+          ]
+        ]
       }
     },
     {
       "type": "Feature",
-      "properties": { "id": "ZONE_IV", "zone": "IV", "name": "특정어업수역 IV (서해 중간수역)" },
+      "properties": {
+        "id": "ZONE_IV",
+        "zone": "IV",
+        "name": "특정어업수역 IV (서해 중간수역)"
+      },
       "geometry": {
-        "type": "Polygon",
-        "coordinates": [[[124.13, 35.00], [125.85, 35.00], [125.85, 37.00], [124.13, 37.00], [124.13, 35.00]]]
+        "type": "MultiPolygon",
+        "coordinates": [
+          [
+            [
+              [
+                124.13,
+                35.0
+              ],
+              [
+                125.85,
+                35.0
+              ],
+              [
+                125.85,
+                37.0
+              ],
+              [
+                124.13,
+                37.0
+              ],
+              [
+                124.13,
+                35.0
+              ]
+            ]
+          ]
+        ]
       }
     }
   ]
-}
+}
\ No newline at end of file