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Your Guide to Diving Cook Islands

All of Undercurrent's information on diving Cook Islands, including articles, reader reports, Chapbook sections, ...

Diving Cook Islands Overview

Tucked between French Polynesia and Tonga, the Cook Islands have from time to time tried to promote themselves as a dive destination. They've never really succeeded, but the main island of Rarotonga has good food and a wide variety of places to stay. There are occasionally excellent airfares offered from the States, and there's even a decent dive through a cut into the lagoon that has good sharks and strong current.

Cook Islands Seasonal Dive Planner

These islands experience little fluctuation in climate and have moderate temperatures and humidity. It does rain, however, with the rainy season beginning in December and running through March. Water temperature varies from a mean of 81°F (27°C) in the summer (December being the middle of summer) to 78°F (25°C) during their winter (August being the middle of winter). Whale season is September and October. Hurricanes mainly develop from January to March, with the more severe ones hitting only about once every twenty years and lesser ones once every five years.

Diving Cook Islands Reader Reports and Feature Articles

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Latest Reader Reports from Cook Islands

from the serious divers who read Undercurrent

All Reader Reports from Cook Islands

All 10,000+
Pacific Divers/N/A Report in Cook Islands/Rarotonga
filed Oct 5, 2014 by Michael Kay (Experience: 101-250 dives, 9 reports, Sr. Reviewer )
4 stars

This is a well-run operation. Steve knows the lagoon and dive sites extremely well (watch him maneuver the dive boat through one meter ... ... Read more

Dive Aitutaki - Bubbles Below/N/A Report in Cook Islands/Aitutaki
filed Oct 5, 2014 by Michael Kay (Experience: 101-250 dives, 9 reports, Sr. Reviewer )
2 stars

[None]DM and Owner Onu works hard to make sure that guests are safe and enjoy the dives. The dives are just outside the encircling ree... ... Read more

Dive Rarotonga/Crown Beach Resort Report in Cook Islands/Rarotonga
filed Nov 1, 2009 by Larry Schnabel (Experience: 501-1000 dives, 15 reports, Contributor )
4 stars

Diveroratonga is next door to the Crown Beach Resort. Karen- head divemaster from Scotland- an experienced, helpful and cheerful group ... ... Read more

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Complete Articles Available to Undercurrent Online Members; Some Publicly Available as Indicated

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Cook Islands Sections from Our Travelin' Diver's Chapbooks

Reader Reports filed for that year

Land Based Dive Resorts in Cook Islands

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Editor's Book Picks for Scuba Diving Cook Islands

The books below are my favorites about diving in this part of the world All books are available at a significant discount from; just follow the links. -- BD

Reef Creature Identification: Tropical Pacific Reef Creature Identification: Tropical Pacific
by Paul Humann and Ned Deloach

Paul Humann and Ned Deloach have done it again, releasing a definitive identification guide to 1600 extraordinary reef creatures of the Tropical Pacific. with this 500+ page softbound guide, you get upwards of 2000 exceptional photos of shrimp and crabs and stars and worms and lobsters and nudibranchs and slugs and squid and bivalves . . . well, all those invertebrates that move along the reefs of this region without fining, so it seems. There are several photos of some creatures to help you identify them during different life stages, and about ten percent of the book is descriptive copy so you can tie down your identification. Even if you have no plans to go to the tropical Pacific, just to thumb through the pages, gawk at the complexity and uniqueness of these animals, and read a thumbnail sketch will give any serious diver vicarious thrills for endless hours.

Click here to buy it at Amazon.

Reef Fish ID Reef Fish Identification: Tropical Pacific
by Gerald Allen, Rodger Steene, Paul Humann, & Ned Deloach

At last, here's a comprehensive fish ID guide covering the reefs of the Pacific and Indian Oceans. The generous 500-page text, displaying 2,500 underwater photographs of 2,000 species, identifies the myriad fishes that inhabit the warm tropical seas between Thailand and Tahiti. The concise text accompanying each species portrait includes the fish's common, scientific and family names, size, description, visually distinctive features, preferred habitat, typical behavior, depth range, and geographical distribution. This is an essential book for every diver traveling westward. 6x9 inches.

Click here to buy it at Amazon.

Dive Sites of the Great Barrier Reef Dive Sites of the Great Barrier Reef
by Neville Coleman.

With 2900 reefs in 220,000 square miles, the enormous Great Barrier Reef has incredible dives -- and some very ordinary ones. If you're contemplating a trip, Neville Coleman's Dive Sites of the Great Barrier Reef and the Coral Sea will help you ensure you pick the best. This 176 page book, with good maps and scores of colorful photos, describes the significant sites, the topography and the critters, then rates and ranks them so you can pick the best. Don't even consider a trip to Australia without consulting this. $24.95

Indo-Pacific Coral Reef Field Guide
by Gerald R. Allen, Roger Steene.

I was trying to pack light for a change. Surely the Solomon Sea would have good identification books aboard. Not so; the only book on the boat belonged to a fellow passenger. It was one that I had not seen before, the Indo-Pacific Coral Reef Field Guide, by two of the best fish guys around, Gerry Allen and Roger Steene. The problem was this fellow passenger kept it in a plastic baggie most of the trip and I had to beg to see it. Great book, good traveling size, and it covers everything from fish, shells, marine plants, mammals, corals, and invertebrates to sea birds and more. Now I've got my own, and it won't do you any good to beg me to borrow it. This is one of two books that I will not travel to the Pacific without. Good for travel to the Red Sea, East Africa, Seychelles, Mauritius, Maldives, Andaman Sea, Malaysia, Indonesia, Philippines, Australia, Micronesia, Polynesia, and Hawaii, it has 1,800 color illustrations in a 6x8 1/2 paperback format with 378 pages. $39.95.

Diving Southeast Asia There's a Cockroach in My Regulator
by Undercurrent

The Best of Undercurrent: Bizarre and Brilliant True Diving Tales from Thirty Years of Undercurrent.

Shipping now is our brand new, 240-page book filled with the best of the unusual, the entertaining, and the jaw dropping stories Undercurrent has published. They’re true, often unbelievable, and always fascinating. We’re offering it to you now for the special price of just $14.95.

Click here to order.

You might find some other books of interest in our Editor's Book Picks section.


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