WORLDS LONGEST SEA CAVES -February 2014
LENGTH 
Rank Cave Name Location Region Country METERS FEET
1 Matainaka Cave Otago Otago New Zealand 1540 5052
2 Erangi Point Cave Bethells Beach North Island New Zealand 1040 3412
3 Kotau Point Cave Bethells Beach North Island New Zealand 485 1591
4 Mercer Bay Cave Waitakere Reg.Park Auckland New Zealand 470 1542
5 Pink Cathedral Cave Otago Otago New Zealand 404 1325
6 Sea Lion Cave   Oregon USA 401 1315
7 Painted Cave Santa Cruz Island California USA 374 1227
8 Waiahuakua Cave Kauai Hawaii USA 352 1155
9 Cueva Tres Pisos Baja California California Mexico 316 1037
10 Holl o Boadie on Papa Stour Shetland Islands Scotland UK 300 984
11 Waiwaipuhi Cave Kauai, Hawaii Hawaii USA 290 951
12 Puffgin Grotto Tongass Alaska USA 287 942
13 Sunbeam-by-the-Sea Cave Punta Banda, Baja Baja Mexico 270 886
14 Pt. Resistance Cave Pt. Reyes Nat.Seashore California USA 264 867
15 Great Fangs Cave Otago Otago New Zealand 259 850
16 Catacombs Cave Anacapa Island California USA 246 807
17 Cathedral Cave Anacapa Island California USA 241 791
18 Forbidden Fissures Santa Cruz County California USA 241 791
19 Sandside Head Cave #2 Thurso, Highland Scotland UK 230 755
20 Sea Maze San Luis Obispo County California USA 229 751
21 Waialoha Cave Kauai, Hawaii Hawaii USA 225 738
22 Virgin's Spring Lundy Island, Devon England UK 225 738
23 Sand Hill Bluff Cave Santa Cruz Co. California USA 206 676
24 Jumbo Gumbo Santa Rosa Island California USA 205 673
25 Parallel Tunnels Punta Banda, Baja Baja Mexico 204 669
26 Cathedral Cave The Catlins   New Zealand 199 653
27 Bat Cave Santa Cruz Island California USA 190 623
28 Seal Canyon Cave Santa Cruz Island California USA 189 620
29 Arch Cave San Diego County California USA 187 614
30 Stalactite Cave Arbroath, Tayside Scotland UK 180 591
31 Mackinnon's Cave Isle of Mull, Strathclyde Scotland UK 180 591
32 Seal's Cave Lewis, Western Isles Scotland UK 180 591
33 Keyhole Rock Cave Anacapa Island California USA 180 591
34 Three Door Cave Anacapa Island California USA 180 591
35 Green Grotto Santa Cruz Island California USA 180 591
36 Swiss Surprise Cave Santa Cruz Island California USA 176 577
37 Big Mother Cave Santa Cruz Co. California USA 173 568
38 Dance Hall Cave Whatipu West Auckland New Zealand 165.5 543
39 Shark's Teeth Cave Santa Cruz Island California USA 158 518
40 Bixby Landing Cave Monterey County California USA 158 518
41 Wolf's lair Tongass Alaska USA 155.5 510
42 Troll Cave Whatipu West Auckland New Zealand 155.1 509
43 Blue Grotto isle of Kastellorizo Dodecanese Greece 155 509
44 Riko Riko Cave Poor Knight Islandas New Zealand New Zealand 153 502
45 Bass Rock Cave North Berwick, Lothian Scotland UK 150 492
46 Sandside Head Cave #1 near Thurso, Highland Scotland UK 150 492
47 Three Fingers Cave Anacapa Island California USA 149 489
48 Cave of the Mists Santa Cruz Island California USA 149 489
49 Sarawak Chamber Santa Cruz County California USA 148 486
50 Neptune's Trident East Fork Santa Cruz Island California USA 145 476
51 Cave of the Lost Soles Mendocino County California USA 142 466
52 Houle de la Banche Cotes-d'Armor Bretagne France 142 466
53 Point Buchon Cave San Luis Obispo Co. California USA 141 463
54 Half-Gone Cave Anacapa Island California USA 141 463
55 Faille de Brezellec Finistere Bretagne France 140 459
56 Witch's Cauldron Santa Rosa Island California USA 139 456
57 Respiring Chimney Cave Anacapa Island California USA 137 449
58 Cueva Valdez Santa Cruz Island California USA 131 430
59 Geo-na-h-airde St. Kilda, Western Isles Scotland UK 130 427
60 Maniniholo Cave Kauai Hawaii USA 129.5 425
61 Cave of the Bird's Eggs Santa Cruz Island California USA 129 423
62 Frenchy's Cave Anacapa Island California USA 129 423
63 Starfish Cave Anacapa Island California USA 129 423
64 Cave of the Harbor Seals Punta Banda Baja Mexico 128 420
65 Victory Cave Anacapa Island California USA 126 413
66 Long Beach Cave Otago Otago New Zealand 125 410
67 Peter's Creek Cove Cave Mendocino County California USA 125 410
68 Painted Grotto Santa Cruz Island California USA 124 407
69 Double Door Cave San Luis Obispo Co. California USA 123 404
70 Shipwreck Cave Santa Cruz Island California USA 123 404
71 Seastack Cave Santa Cruz Island California USA 122 400
72 Lady's Harbor Cave Santa Cruz Island California USA 122 400
73 Owl Cave Tongass Alaska USA 121 397
74 Papanikolis Meganisi, Leucada   Greece 120 394
75 Culzean Castle Cave #3 near Ayr, Strathclyde Scotland UK 120 394
76 Rovers' Cave Tobermory Ontario Canada 120 394
77 Victor Cave Whatipu West Auckland New Zealand 119.5 392
78 Complex Chasm Anacapa Island California USA 119 390
79 Room with many Windows Punta Banda Baja Mexico 119 390
80 Pt. Resistance Cave Marin County California USA 118 387
81 Natural Bridge Cave Santa Cruz Island California USA 117 384
82 La Grieta Anacapa Island California USA 116 381
83 Grande grotte du Talut Morbihan Bretagne France 116 381
84 Watcomb Bay Cave Isle of Wight England UK 115 377
85 Great X Cave Anacapa Island California USA 113 371
86 Kalalau Landslide Cave Kauai Hawaii USA 112 367
87 Little River Pit Mendocino County California USA 111 365
88 Dry Sandy Beach Cave Santa Cruz Island California USA 111 364
89 Emerald Cave isle of Milos Cyclades Greece 110 361
90 Dickmont's Den Cave Arbroath, Tayside Scotland UK 110 361
91 Fast Castle Head Cave Berwick, Lothian Scotland UK 110 361
92 Kalalau Beach Cave Kauai Hawaii USA 110 361
93 Little Scorpion Bay #2 Santa Cruz Island California USA 108 354
94 Smuggler's Cave San Diego County California USA 108 354
95 Surging T Cave Santa Cruz Island California USA 108 354
96 Collapsing Cave Anacapa Island California USA 108 354
97 Outside Tunnel Cave Anacapa Island California USA 108 354
98 Cormorant's/Mackinnon's Cave Isle of Staffa, Strathclyde Scotland UK 107 351
99 Surfing Tunnel Santa Cruz County California USA 107 351
100 Breathing Cave Santa Cruz Island California USA 106 348
101 Starfish Cave Mendocino County California USA 102 335
102 Midden Point Cave Santa Cruz Island California USA 102 335
103 Cavern Point Cave Santa Cruz Island California USA 101 331
104 Pirate's Den Kauai Hawaii USA 101 331
105 Uamh Freisgill Loch Eriboli, Highland Scotland UK 100 328
106 Flamborough Head Cave #4a Bridlington, Humberside England UK 100 328
107 Livermore Head Sea Cave #5 Torquay, Devon England UK 100 328
108 Piper's Cave Tresco, Isles of Scilly England UK 100 328