search-icon
Surface Interval

Sometimes the most exciting marine wildlife encounters happen at the surface rather than under the water. On this particular occasion we were on our surface interval between the first and second dives on the southern tip of Huon Atoll.

A ‘surface interval’ is diving jargon for any period out of the water between dives. This period allows much of the nitrogen that has accumulated in diver’s bodies under pressure during the first dive to be expelled prior to a subsequent dive. Our hour long surface interval is often spent transiting from one dive site to another, basking in the sun for warmth, or grabbing a quick snack or drink.

On this particular day, the usual surface interval routine was broken by the cry of “dolphins!” An exclamation quickly followed by “No that dorsal fin is bigger – what is it?”

A Brief Encounter with a Mixed Pod of Pilot Whales and Dolphins

As the pod of cetaceans turned towards us, we got our first clear view of the mammals. Surfing towards us in a light Pacific swell was a mixed pod of pilot whales and dolphins. Though termed whales, pilot whales (Globicephala sp.) are actually large members of the dolphin family.

A pod of pilot whales and dolphins surfed the waves as they approached the dive boat.

A pod of pilot whales and dolphins surfed the waves as they approached the dive boat.

Several excited divers quickly donned fins, mask, and snorkel and slipped quietly into the water with cameras primed, but the pod paid no heed and quickly moved by. Showing little interest in the boat, these marine wildlife offered only the briefest of opportunities for underwater photography to a few lucky snorkelers.

Although they quickly swam past, a few of the snorkelers were afforded an all be it brief underwater view of the pod of pilot whales and dolphins.

Although they quickly swam past, a few of the snorkelers were afforded an all be it brief opportunity for underwater photography of the mixed pod.

As we continued north around Huon Atoll to our second dive location, we once again encountered the pod of pilot whales and dolphins, before they vanished into the grey expanse of the Pacific, leaving only the glowing sense of awe that accompanies such marine wildlife encounters. Slowly, the excited chatter of divers and crew gave way to a more usual low pitched hum as focus switched back to the more mundane task at hand – preparing for the second dive.

 

Photos: 1-2 – Georgina Evans, 3 – Antoine Gilbert

Related Posts

Everything You Need to Know About the 2027 Science Without Borders® Challenge

Are you ready to combine your creativity with ocean science?

The 15th Annual Science Without Borders® Challenge is now open! Whether you’re participating for the first time or returning for another year, this guide will help you get started.

This year’s theme, Navigate With Care, invites students to explore how responsible navigation helps protect both people and life in the ocean. Through your artwork, you can compete for scholarships and international recognition while inspiring others to protect both people and life in the ocean.

Read More

Global Reef Expedition Data Contributes to Landmark Report on the World’s Coral Reefs

More than a decade after scientists aboard the Global Reef Expedition surveyed coral reefs across the Pacific, the data they collected continues to contribute to our understanding of the world’s coral reefs.

Today, the Global Coral Reef Monitoring Network (GCRMN) released Status of Coral Reefs of the World: 2025, the most comprehensive assessment to date of the status and trends of coral reefs worldwide. The report brings together an extraordinary amount of information collected over more than four decades—and the Khaled bin Sultan Living Oceans Foundation is proud to have contributed data from the Global Reef Expedition to this global effort. 

Read More
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.  You can view our complete Privacy Policy here.

Strictly Necessary Cookies

Most of our cookies are used to improve website security and reduce spam. These cookies should be enabled at all times. They also enable us to save your preferences for cookie settings.

3rd Party Cookies

This website uses Google Analytics to collect anonymous information such as the number of visitors to the site, and the most popular pages. Keeping this cookie enabled helps us to improve our website.