| Species | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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 Blacktip reef sharks |  | | | | | | | | | | | |  |
| Regularly seen shark in shallow water especially on the reef flats. Also seen by divers in deeper waters.
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| Bottlenose Dolphins |  | | | | | | | | | | | | |
| We have a pod of Common Dolphins that regularily swim with Spinner Dolphins. They can be seen all year round although like all wild creatures they decide when to interact.
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| Dugongs | | | | | | | | | | | | | |
| Our resident dugong affectionally known as "Kat" after the diver who first found her in June 2002. She prefers smaller groups and will glide in from above and behind you.
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| Green turtles | | | | | | | | | | | | | |
| Seen regularily when diving or at night time in the lights from the West Island jetty.
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| Grey reef sharks | | | | | | | | | | | | | |
| We call them our reef police. Seen on most dives without the need to add fish food to the water.
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| Hawksbill turtles | | | | | | | | | | | | | |
| Like the Green Turtles, Hawsbill Turtles also in large numbers.
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| Manta rays | | | | | | | | | | | | | |
| Graceful manta rays always around, usually seen on snorkel while travelling to dive site. Also encountered at several locations while on scuba.
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| Moray eels | | | | | | | | | | | | | |
| Giant & Yellow-margined morays looking out from their rock homes. Spotted garden eels in sandy areas between the corals reefs.
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| Pelagic fish | | | | | | | | | | | | | |
| Dog tooth tuna; blue fin, black and big eye trevally (jacks), wahoo and barracuda.
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| Tiger sharks |  | | | | | | | | | | | | |
| We call them "Mr Stripey". They are here to feast on our turtles, luckily they are usually shy and glide away as soon as eye contact is made with divers.
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| Whale sharks | | | |  | | | | | | | | | |
| Whale sharks are certainly common at Christmas Island our nearest neighbour. They do visit Cocos Islands however sightings are rare and only during (Australian) summer months.
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| Whitetip reef sharks | | | | | | | | | | | | | |
| Usually seen sleeping on the sandy bottom during the day, and will only swim away if you rush in too quickly.
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0%, 
0 > 60%, 
60 > 90%, 
90 > 100%