- Deep Sea Dive
For the Deep Sea Dive, after you complete the mission of retrieving the bag from the sub, your portable air tanks will disappear. However, you will not need them after this is done.

- Albino Bottlenose Dolphin in Ciercos Strait
Train your dolphin until it reaches level 2. Meet Finly the dolphin trainer, and invite him to see your dolphin show. He will tell you to go to Ciercos Strait to find a white dolphin. Go there, and rescue it from the shark.

- Legendary Leatherback Sea Turtle in Gatama Atoll
Have Snorkel on the island, and look for him by the bonfire. Pet him to get information about a strange moving island in Gatama Atoll. Investigate that area to find the legendary Leatherback Sea Turtle.

- Finding Pelago Crocodile
Look through the telescope on the morning before the full moon to see the Pelago Crocodile. Notice: Keep entering the cabin repeatedly to advance time until sunrise.

- Tour for White Grouper in Valk Castle
The White Grouper you must find a few times is in the Castle Gallery. This is the first place you find the False Killer Whale.

- Salvage items
The following items can be salvaged:

168. Gold Ingots
9. Red Coral
185. Medieval Chest
22. Golden Charm
167. Silver Ingots
179. Greek Sculpture
110. Piggy Bank
20. Cannonball
163. Women's Clothes
164. Titanium Safe
143. Hand Mill
114. Chemistry Set
133. Submarine Light
30. Glass Vase
40. Old Magazine
91. Dark Statue
148. Assault Rifles
39. Decanter
144. Large Box
14. Glass Marble
7. Nephrite
198. Ocean Treasure
129. Platinum Ingot
83. Matryoshka Doll
104. Rural Scene
24. Crystal Ball
119. Lead Ingot
54. Ivory Ring
113. Silverware Set
10. Gold Ore
156. Pandora's Box
192. Spartan Treasure
138. Totem Pole
135. Conga Drum
65. Trident Ring
186. Treasure Chest
172. Wax Figure
75. German Pottery
86. Bunraku Puppet
161. Rations
15. Glass Buoy
58. Silver Ring
130. Orichalcum Ingot
69. Earthenware Pot
112. Clock
72. Staffordshire Pot
195. Imperial Treasure
43. Personal Diary
107. First-Aid Box
121. Aluminum Ingot
151. Persian Rug
16. Baseball
76. Tortoiseshell Pot
183. Empty Chest
160. Plasma TV
56. Signet Ring
105. Small Box
159. Fridge
57. Secret Ring
193. Crusader Loot
127. Explorer's Ingot
157. Packing Straw
149. Flamethrower
132. Concrete Drum
28. Pickled Olives
153. Pieces of Eight
102. Impressionist Art
8. Silver Ore
27. Empty Bottle
128. Gold Ingot
98. Spirit Statue
32. Perfume Bottle
21. Signed Baseball
131. Empty Oil Drum
189. Moon Treasure
71. Joseon Baekja
169. Boxed Armor
188. WWII Chest
74. Jingde Pottery
166. Supercomputer
87. Spirit Statue
190. Holy Treasure
99. Ukiyo-E
82. Marionette
180. Pharaoh Statue
139. Smuggler's Barrel
29. Juice Bottle
26. Crystal Skull
2. Marble
103. Cubist Painting
94. Pop Art
46. Japanese Book
191. British Treasure
134. Live Torpedo
137. Barrel
78. Canopic Vessel
52. Toy Ring
140. Specimen Tube
199. Rover's Treasure
173. Doll
59. Tourmaline Ring
174. Shadow Statue
73. Imari Pottery
79. Figurine
35. Ship in a Bottle
187. Industrial Chest
81. Die Cast Model
116. Gem Box
194. Incan Treasure
109. Music Box
51. Rare Book
117. Locked Box
64. Diamond Ring
100. Chinese Painting
184. Ancient Chest
4. Stone
136. Japanese Drum
25. Black Pearl
152. Terra-Cotta Figure
47. History Book
80. Plastic Figure
95. Baroque Painting
12. Meteorite
101. Portrait Painting
77. Irish Pottery
41. Ladies Magazine
122. Germanium
171. Bronze Statue
17. Pearl
142. Pirate's Barrel
176. Nanban Armor
196. Bedouin Treasure
63. Emerald Ring
165. Sculpture
125. Silver Ingot
170. Mannequin
124. Silicon Ingot
38. Amrita
55. The 7th Tome
197. Nile Treasure
88. Teddy Bear
92. Copied Painting
1. Amber
141. Petrified Wood
19. Glass Bead
120. Iron Ingot
13. Sages Stone
31. Mercury Bottle
3. Seashell
84. German Doll
36. Sparkling Juice
60. Gold Ring
115. Jewelry Case
48. Grimoire
90. Primitive Idol
175. Japanese Statue
66. Octopus Pot
98. Neoclassic Art
126. Titanium Ingot
111. Shogi Set
150. Mercury Bottles
178. Plate Armor
181. Marble Statue
106. Jack-in-the-Box
182. Stone Statue
68. Ancient Pottery
97. Gothic Painting
158. Industrial Waste
154. Sarcophagus
155. Gold Doubloons
96. Flower Painting
53. Bone Ring
50. Epic Poem
18. Capsule Toy
177. Guardian Statue
162. Men's Clothes
146. Chest of Drawers
61. Ruby Ring
89. Bisque Doll
49. Antique Art Book
34. Antique Bottle
147. Ornamental Box
33. Soy Sauce
85. Clockwork Toy
23. Dinosaur Egg
62. Sapphire Ring
11. Ambergris
123. Copper Ingot
37. Magic Potion
108. Japanese Box
118. Fake Gold Ingot
70. Delft Pottery
145. Gothic Coffin
67. Porcelain Vase
6. Malachite
44. Old Vellum Book
42. Fiction Magazine
93. Sketch
45. Poetry Anthology
5. Granite
200. Cleo's Treasure

- Finding Snorkle in Gatama Atoll
Snorkle is a lost puppy which you stumble upon. He can be found at Gatama Atoll on the island at grid mark H1. Notice: You must surface in more than one location in some islands to cover them all.

- Photo request locations
Search one of the following locations to find a photo request. Notice: Quality countes.

Cross Rift	Cicero Straits. It should already be marked on your map. You do not need to dive at midnight for it if the Cross Rift dive spot is unlocked.
Orange Sea Slug	Found where Nancy says it is, on the sand floor (difficult to see), and not in the coral.
Golden Clown Golby	Grid mark F, G, 3, 4, but is found with Yellow Golby fish at the bottom of grid mark G4 (purple coral).
Manta Ray	Gatama Atoll (C3).
Great White Shark	Cicero Straits (E3, swimming above shipwreck).
Electric Eel	Amazon River, maze forest.
Enchanted Hallway	Unknown.
Tortipsis Nautica (jellyfish)	Valk Castle, Mermaid Ball Room (small shiny spot)
Humphead Wrasse	Gatama Atoll (E8).
Capier	All over the Arctic during the day.
Mediterranean Monk Seal	Check your Encyclopedia if you did not take the picture during the rescue mission in Cicero Straits. They are not in the original locations any more.
Moon Jellyfish	Cicero Straits (E3, north of shipwreck).
Banded Angel Fish	Deep Hole (A2, small shiny spot).
Bertrella Aurantiac	Valka Castle, grid mark C2 at the glowing spot.
Armory Landmark	Unknown.
Wulruss	Arctic, when you surface through the hole at grid mark A1. The one you are looking for is on the far right.

- Big Bob the Penguin in Weddell Sea
You can find a very large Emperor Penguin at one of the landing locations in Weddell Sea. Scan it to get Big Bob's information.

- Finding nearby fish
If you complete at least 25% of the map, sometimes there will be an icon above the grid view icon of a magnifying glass with a picture of a fish. Select the icon, and the arrows (if allowed) to see nearby fish or fish you have yet to discover. These will have '???' in the name. After you discover the fish and animal, they will also appear in the encyclopedia once you select its image. This is very useful when you need to take photos of a fish.

- Apollo the Ocean Sunfish in Deep Hole
Go to Deep Hole at night to find Apollo, a large golden ocean sunfish, above the Mouth of Truth.

- Salvage Request
Salvage requests do not require use of you equipment. Jean-Erics request will appear in a red glow and Gestan Grey's will appear in an orange glitter glow.

- Nocturnal fish
Some fish only appear at night. For example, there is a fish in Cicero Straits that blends in with a shipwreck, and it looks like a piece of wood breaking apart from the boat. Use the fish icon on the map to find it.

- Ghost in Valka Castle
Go to Valka Castle at night with Oceana.

- Gold Catfish in Amazon
To unlock the Gold Catfish, you must first find the Servants Ring that is located between the waterfall and elsewhere in Twilight Temple. When you find the Servants Ring, GG will appraise it before you have a chance to call Nancy. He will tell you it is worth nothing. Then, return to the Amazon where you found the Giant Catfish. A cutscene will begin, and you will have a chance to give the fish your ring at the end. Select 'Yes', do some exploring or something else, then return to the boat. During your next dive you will return to the catfish and another cutscene will reveal that the catfish is now a Gold Catfish.

- Eggs in Gatama Atoll
Fish eggs will begin appearing in certain locations on the reefs after spending awhile in Gatama Atoll.

- German pottery location in Triton Ruins
The German pottery you need is in the Triton Ruins near the well. You do not need to dive at midnight for it if the Cross Rift dive spot is unlocked.

- Finding Lower Ice Cave 3
Find the fissure at C8, and follow it down so you do not have to measure meters versus feet or get confused.

- Okeanos Guardian in Cavern Of The Gods
When you encounter the Goblin Sharks, scan the largest shark in the Cavern Of The Gods.

- Singing Dragon in Cavern Of The Gods
Get past the Giant Goblin Shark in the Cavern Of The Gods, and the Singing Dragon, a white whale, will appear.

- Three fish to heal locations in Gatama Atoll
During your return to Gatama Atoll, you must locate and heal (with your pulsar) three fish: a Manta Ray, a Humphead Wrasse, and a Manta Whale. They are located at grid marks C3, G2, and E8. If you do not know what you are looking for, the best thing to do is swim to these locations and discover them first. Make sure your tank is upgraded or you will not have enough air to finish the tasks. You will get three tries before you must leave the area and return later to try again.

- Finding the strange noise in Weddell Sea
The strange noise is located in the third ice-cave at grid mark C8, about 150 meters deep.

- Secret cave in Deep Hole
The secret cave in the Deep Hole area is located in the middle of the Deep Hole itself. You must have your dolphin by you and press A when instructed to open it.

- Triton Ring in Deep Hole
The Triton Ring can be found near the Ribbon Moray Eel in the Deep Hole. The Moray Eel looks like a Blue Tang. Notice: The Multisensor is required to find it.

- Blue Cliffs
At a certain point you will be asked to go to the Blue Cliffs, which are located in the deep area of grid marks A and B 8. You must swim around for a bit towards the bottom (almost to where you cannot go any farther). This might require a few attempts. It is recommended you try grid mark B8 and swim towards grid mark A8 first at various depths.

- Sea Serpent in Ciercos Strait
Sell at least three maps, and Oceana will tell you about a shadow on the map of Ciecrocos Strait. Keep asking Oceana about it, and she will tell you where the Sea Serpent can be found.