8401. Wisconsin Seamount (21.27N, 165.13W) , Seamount 8402. Wishard Reef (8.13N, 154.25E) , Reef 8403. Witter Bank (17.57N, 77.93W) , Bank 8404. Wood Seamount (17.45N, 156.08W) , Seamount 8405. Woodlark Basin (10.17S, 153.33E) , Basin 8406. Woodlark Ridge (9S, 152E) , Ridge 8407. Woods Hole Guyot (21.17N, 166.45E) , Tablemount (or Guyot) 8408. Woodworth Seamount (52.25N, 149.5W) , Seamount 8409. Woollard Guyot (18.3N, 171.1E) , Tablemount (or Guyot) 8410. Woollard Seamount (29.1N, 178.12W) , Seamount 8411. Woolnough Knoll (34.03S, 151.65E) , Knoll 8412. Wordie Caldera (61.8S, 55.45W) , Seamount 8413. Wordie Seamount (61.8S, 55.45W) , Seamount 8414. Wormley Seamount (13.75S, 57.95E) , Seamount 8415. Worzel Basin (26.73N, 92.67W) , Basin 8416. Wrangel Abyssal Plain (81N, 160E) , Plain 8417. Wrangel Plain (81N, 160E) , Plain 8418. Wright Shoal (8.32N, 117.67E) , Reef 8419. Wright Swell (42.5N, 68.08W) , Rise 8420. Wu-shih Pi Canyon (23.22N, 121.42E) , Canyon 8421. Wu-yung An-sha (15.85N, 114.78E) , Reef 8422. Wust Seamount (34S, 3.67W) , Seamount 8423. Wyandot Seamount (37.75S, 15.75E) , Seamount 8424. Wyer Seamount (54.42N, 148.67W) , Seamount 8425. Wyoming Seamount (33.47N, 56.95W) , Seamount 8426. Wyville Thompson Ridge (60.25N, 7.5W) , Ridge 8427. Wyville Thomson Ridge (60.25N, 7.5W) , Ridge 8428. Xauen Bank (35.38N, 4.3W) , Bank 8429. Y Valley (42.53N, 70.22W) , Valley 8430. Ya-hsi An-sha (3.75N, 112.65E) , Reefs 8431. Yacopi Valley (15.15N, 80.3W) , Seamount 8432. Yadua Trough (16.2S, 178.83E) , Trough 8433. Yaghan Basin (56S, 61W) , Basin 8434. Yakobi Strath (58N, 137W) , Valley 8435. Yakobi Valley (58N, 137W) , Valley 8436. Yakutat Canyon (59.5N, 140W) , Valley 8437. Yakutat Seamount (35.25N, 48W) , Seamount 8438. Yakutat Seavalley (59.5N, 140W) , Valley 8439. Yakutat Strath (59.5N, 140W) , Valley 8440. Yakutat Valley (59.5N, 140W) , Valley | 8441. Yalata Canyon (34.77S, 131.7E) , Canyon 8442. Yamato Bank (39.33N, 135E) , Ridge 8443. Yamato Basin (38.5N, 136E) , Basin 8444. Yamato Ridge (39.33N, 135E) , Ridge 8445. Yamato Rise (39.5N, 134E) , Rise 8446. Yamato Seamount (38.87N, 136E) , Seamount 8447. Yamato Seamount (39.33N, 135E) , Ridge 8448. Yamato Seamount Chain (38.87N, 136E) , Seamount 8449. Yamato Tablemount (37.75N, 133.75E) , Tablemount (or Guyot) 8450. Yamato Trough (39.42N, 134.25E) , Trough 8451. Yamato-tai (39.33N, 135E) , Ridge 8452. Yana Valley (76N, 133E) , Valley 8453. Yandua Trough (16.2S, 178.83E) , Trough 8454. Yang-ming Chiao (10.8N, 116.85E) , Reef 8455. Yangi-Shu (5.88N, 145.65E) , Reefs 8456. Yanjii Shu (5.88N, 145.65E) , Reefs 8457. Yanthe Shoal (5.88N, 145.65E) , Reefs 8458. Yap Ridge (9N, 138E) , Ridge 8459. Yap Trench (8.5N, 138E) , Trench 8460. Yap Trough (8.5N, 138E) , Trench 8461. Yaponskiy Zhelob (37N, 143E) , Trench 8462. Yaquina Ridge (45.77N, 125.33W) , Ridge 8463. Yaquina Trough (3N, 80W) , Trough 8464. Yasawa Trough (16.67S, 176.67E) , Trough 8465. Yatsuhashi Seamount (27.97N, 160.23W) , Seamount 8466. Yavanskiy Zhelob (10.5S, 110E) , Trench 8467. Yermak Plateau (82N, 5E) , Plateau 8468. Yermak Rise (82N, 5E) , Plateau 8469. Yin-ch'ing Ch'un-chiao (8.85N, 112.53E) , Reefs 8470. Yin-chi T'an (16.02N, 114.93E) , Reef 8471. Yin-li T'an (16.77N, 112.22E) , Reef 8472. Yin-lo T'an (16.77N, 112.22E) , Reef 8473. Yinqing Qunjiao (8.85N, 112.53E) , Reefs 8474. Ymir Ridge (59.95N, 8.17W) , Ridge 8475. Yomei Seamount (42.3N, 170.4E) , Seamount 8476. York Breakers (9.9N, 118.17E) , Reef 8477. York Shoal (65.2N, 167.5W) , Shoal 8478. Yoro Seamount (27.65N, 130.8E) , Seamount 8479. Young Nicks Seamount (39.47S, 179.93E) , Seamount 8480. Yu-ya An-sha (8.15N, 114.73E) , Reef |