Dive Course: Advanced Open Water Diver

Posted on May 16, 2025May 16, 2025 by Annabel Thomas

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Advanced Open Water Diver Course

Advanced Open Water Diver course will help you fine-tune your diving skills, increase your abilities and experience, all while exploring Bali’s best dive sites.

This course is a structured programme that gives certified divers the chance to sample some of diving’s most popular specialities. You will practice navigation and buoyancy, try deep diving and make three speciality dives of your choosing.

You will also gain additional experience and skills with one of AquaMarine’s experienced PADI instructors.

About the Course

AquaMarine Diving – Bali’s PADI Advanced Open Water Diver Course is the next step in getting certified to dive in deeper depths and experience the different kinds of adventure diving available.

Students need to complete five dives: Two Core Dives: Deep and Underwater Navigation; and three Elective Dives. The Elective Dives allow divers to sample 3 diving specialities that interest them. At AquaMarine, we offer many PADI Specialities. Here are a few:
– Boat Diver
– Digital Underwater Photographer
– Drift Diver
– Fish Identification
– Enriched Air/Nitrox Diver
– Night Diver
– Peak Performance Buoyancy
– Underwater Naturalist
– Underwater Navigator
– Wreck Diver

After some skill practice with your instructor, you will make five open water dives. There is no exam because this course is truly about having fun and gaining experience.

For every speciality dive you complete, you can earn credit toward PADI speciality certifications.

After completing the course, you will be a more confident diver. With a wide range of dive experience under your (weight)belt, you will be ready to start thinking about the next step: PADI Rescue Diver or PADI Junior Rescue Diver course.

PADI Advanced Open Water Diver Course

Click below for more PADI Dive Courses Information:

PADI Dive Courses

Diving Tips: Different Ways to Equalise

Posted on May 1, 2025May 3, 2025 by Annabel Thomas

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Equalising is Important for Divers

by Alfari, AMD-B’s 2025 Divemaster Intern

When you’re exploring the underwater world, one of the most essential skills to master is equalising. As you descend or ascend in water, the pressure on your body increases or decreases, affecting air spaces such as your ears, sinuses, and mask. To ensure comfort and safety, divers need to equalise these air spaces to prevent discomfort, injury, or barotrauma (damage caused by changes in pressure). Here are different methods of equalising that you can use to make your diving experience more enjoyable and safe.

Equalisation Techniques in Diving

The Valsalva Maneuver

The Valsalva maneuver is the most commonly used technique to equalise during a dive. It involves pinching your nose shut and gently blowing air through your nose, which increases the pressure inside the Eustachian tubes, allowing air to enter the middle ear.

How to Perform:
– Pinch your nostrils closed;
– close your mouth;
– gently exhale through your nose (not forcefully) until you feel a slight pop or pressure equalisation in your ears.

When to Use: The Valsalva maneuver is typically used during the descent and ascent, especially if you feel any discomfort or fullness in your ears.

The Frenzel Maneuver

The Frenzel maneuver is a more advanced equalisation technique that can be effective for those who find the Valsalva maneuver difficult or ineffective, particularly at deeper depths. It involves using the muscles at the back of the throat to push air into the middle ear.

How to Perform:
– Pinch your nostrils closed;
– close your mouth;
– contract the muscles at the back of your throat (as if you are trying to make a “k” sound) to push air into the Eustachian tubes.

When to Use: The Frenzel maneuver is especially useful for deep diving, as it can be more effective at higher pressures where the Valsalva may not work as well.

Jaw Wiggling and Yawning

For some divers, especially at shallow depths or when equalising isn’t working with traditional methods, jaw wiggling or yawning can help to equalise the ears naturally.

How to Perform:
– Move your jaw up and down or side to side as if you’re chewing;
– you can also try yawning, which helps open the Eustachian tubes.

When to Use: This method can be particularly useful for those who are in shallow waters or when you feel slight pressure changes but don’t want to force any of the other techniques.

Best Practices for Equalising

1. Equalise Early and Often: Start equalising before you feel any discomfort and continue to do so regularly throughout your descent and ascent.

2. Descend Slowly: Descending too fast can make it harder to equalise in time. Always control your decent rate.

3. Do Not Force It: Never force air into your ears if you’re not able to equalise. Forceful attempts can cause injury. If you can’t equalise, ascend a few feet and try again.

In conclusion, equalising is a vital skill for all divers to ensure safe and enjoyable underwater experiences. Different equalisation techniques work better for different people, so experiment with each method and find what works best for you. Always remember to equalise early and often to prevent discomfort, and if you feel any pain or difficulty, it’s important to stop and seek guidance from your dive instructor. Happy diving!

Bali Diving Trip

Indonesia is a Global Hotspot for Marine Biodiversity

Posted on April 28, 2025April 28, 2025 by Annabel Thomas

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Indonesia is a Global Hotspot for Marine Biodiversity

by Fahmi, AMD-B’s 2024 Divemaster Intern

Indonesia is a global marine biodiversity hotspot, hosting about 76% of the world’s coral species and approximately 37% of reef fish species, with over 2,200 reef-associated fish and 590 coral species thriving in its waters. So it’s safe to say that Indonesia is indeed a global hotspot for marine biodiversity, but the question now is why:

Strategic Location in the Coral Triangle

Indonesia is located in the Coral Triangle, a region known as the epicentre of marine biodiversity. The diverse coral species found in Indonesia are closely linked to the abundance of fish in the area. Corals are a key species in shallow water ecosystems, much like trees in a forest, supporting a wide range of marine life and making the region a hotspot for marine biodiversity.

Warm Tropical Waters

Indonesia’s climate is characterized by two seasons: wet and dry. While the wet season brings higher chances of rain at certain times of the year, the temperature remains relatively stable, creating an ideal environment for coral reefs to thrive. This consistency in water temperature, combined with strong sunlight exposure, supports coral health. Corals rely on sunlight for photosynthesis through their symbiotic relationship with zooxanthellae, the algae within their tissues.

Ocean Currents as Nutrient Highways

Strong ocean currents, such as those from the Indonesian Through-flow, funnel nutrient-rich water through the region. These nutrients support plankton growth, which forms the foundation of the marine food web. This abundance of food attracts fish, sharks, and larger marine animals, creating thriving ecosystems.