| Contains: | Clue | Answer | % Correct |
|---|---|---|---|
| OC | Where you would go swimming off the coast of Perth, W.A. (11) | Indian Ocean | 100%
|
| OI | The longest river entirely in France (5) | Loire | 100%
|
| OB | The 7th-longest river in the world, in Russia | Ob | 100%
|
| OH | River with a U.S. state named after it (4) | Ohio | 100%
|
| OQ | Waterway of New York state; similar to the word for a bunch of flowers (11) | Boquet River | 0%
|
| OS | The strait crossed by the bridge at Istanbul, where poor subs may sail (8) | Bosporus | 0%
|
| OR | Man-made channel crossing the isthmus south of Athens, whose name appears in the title of a book of the New Testament (11) | Corinth Canal | 0%
|
| OO | The gulf which starts at Anchorage, named after an English sea explorer (9) | Cook Inlet | 0%
|
| OA | The stream which is the source of the Missouri; the name means "Devil's lair, making a noise like a lion" (16 letters) | Hell Roaring Creek | 0%
|
| OJ | Faintly visible, a river flowing through Osaka (6) | Dojima | 0%
|
| OX | Shallow sea on the south of Baffin Island; contains the name of a mammal (9) | Foxe Basin | 0%
|
| OF | The gulf on which Helsinki is located (13) | Gulf of Finland | 0%
|
| OY | Inlet of the Pacific which touches Costa Rica, perhaps a place of theft? (12) | Gulf of Nicoya | 0%
|
| OG | Europe's biggest lake, where the family pet likes to splash around (10) | Lake Ladoga | 0%
|
| OD | Body of water in the trees of Minnesota, Ontario and Manitoba (14) | Lake of the Woods | 0%
|
| OK | Huge, frozen expanse under an Antarctic glacier (10) | Lake Vostok | 0%
|
| OP | South African river in which one may struggle to walk, before surgery requiring a certain blood type (7) | Limpopo | 0%
|
| OL | The sea on Sulawesi's east coast (10) | Molucca Sea | 0%
|
| OZ | Melon man takes a beach quiz, off the coast of Madagascar (17) | Mozambique Channel | 0%
|
| OM | River of Bolivia where one has most of a tablet, in company, along with some egg-based sauce (9) | Pilcomayo | 0%
|
| OT | Inlet of the NW Pacific, bounded by Kamchatka to the east (12) | Sea of Okhotsk | 0%
|
| OU | Oceanic area between the Philippines and Vietnam (13) | South China Sea | 0%
|
| OV | The narrow eastern end of the English Channel (13) | Strait of Dover | 0%
|
| OE | Weird aurora is visible, if you consume stir-fried rice at this Brazilian tributary; you see the first half of a rarity, an ice phenomenon (10) | Uraricoera | 0%
|
| ON | Shallow, enclosed bay where a famous Italian tourist destination is found (14) | Venetian Lagoon | 0%
|
| OW | The large bay between Korea and eastern China (9) | Yellow Sea | 0%
|