How to Plan the Perfect Underwater Adventure in Hawaii

If you're a self-proclaimed mermaid or merman who loves to be in and around the ocean, Hawaii is the perfect next destination to visit. The island's pristine waters and vibrant marine life make it a top destination for underwater adventures. Whether traveling solo, with your significant other after eloping, or vacationing with your kids, there is something for everyone to enjoy beneath the surface. 

This blog covers the best underwater activities in Oahu and tips to make the most of your experience.

 

1. Snorkeling

Perfect for anyone - with or without a guide 

Snorkeling is one of the easiest ways to enter Oahu's beaches' underwater world. Visit some of the top snorkeling spots in Oahu with guides or independently. Snorkeling allows you to come up close and personal with vibrant coral reefs, colorful marine creatures like sea turtles (ʻhonu), and reef fish.

Hanauma Bay is one of the top-voted spots for snorkeling in Oahu. It is a protected marine life conservation park with vibrant aquatic life and calm shallow waters. Visit the park's website for opening times and fees. 

Tips:

  • Early mornings are best for calmer water and visibility. 

  • Use well-fitting masks and fins for a comfortable experience.

  • Defogging gel or baby shampoo is a massive help for defogging your mask. 

  • Get kids to practice submerging their faces and using snorkeling gear in a pool before venturing out.

 

2. Dive with Sharks 

For adrenaline-seekers 

Daredevils will find their thrill with cage-less shark diving. You can view sharks more closely with informative guides and safety divers. Opt for shark cage diving instead for those who prefer a barrier from those toothy grins. 

Tips: 

  • Ask the company you choose which species you'll encounter. Learning about their behavior and how to react in their presence can give you confidence in the water.
  • Listen to the safety information from your guides. 
  • Select a company with experienced guides and high ratings. 

 

3. Scuba Diving

For experienced or beginner divers, great for learning a new skill

Explore deeper waters and get up close with sea life and local shipwrecks by scuba diving. As a certified diver, you can have your pick of exciting underwater sites or start a beginner course that you can enjoy for many years to come. 

Tips:

  • Top dive sites in Oahu include the YO-257 Wreck and the WWII Corsair Plane Wreck. 

  • Check your certification requirements and join a dive tour suited to your skill level.

  • Stay hydrated and avoid flying 24 hours after diving.

 

4. Underwater Scooters 

For active families with preteens, or group explorers

Underwater scooters in Oahu are loads of fun. They allow swimmers to zoom through the water, enjoy the clear oceans, and view the coral reef. You can choose between the Oahu submarine scooter adventure, which involves upright scooters and astronaut-type helmets for breathing, or the Seabobs, which dive horizontally, requiring you to hold your breath.

Tips:

  • Wear a swimsuit and rash guard for comfort. (Shop these local swimwear brands.) 

  • Don't forget your waterproof camera to capture your underwater scooter Oahu adventure.

  • Suitable for ages 10 and up.

 

5. Submarine Tours

For those who wish to stay dry and families with young kids

Submarine tours are a fantastic option for families who wish to stay dry. Guests are taken to the depths to view sunken ships and deep-sea coral communities. 

Tips:

  • Snatch online tickets quickly, as tours often sell out, especially during peak vacation season.

  • Some submarine tours allow kids from the age of 3; perfect for little ones with a sense of awe. 

  • Keep your eyes peeled for unique marine life like manta rays and reef sharks.

 

6. Snuba Diving

Zero diving experience needed!

A hybrid of snorkeling and scuba diving, Snoba lets you breathe underwater using hose-supplied air on the surface. It's perfect for those who want to dive deeper without diving experience. It is ideal for families with children from about 8 years old. 

Tips:

  • Practice breathing through the hose before diving into the water depths.

  • Relax and move slowly to conserve energy and air.

 

'Unda Da Sea..." and Embracing all Oahu Offers!

Some final tips for your perfect underwater adventures in Oahu:

  • Take care of the ocean while you're out there—don’t touch the coral or marine life, and remember it’s illegal (and harmful!) to take or damage coral. 
  • Stay hydrated, and use reef-safe sunscreen to keep your skin happy and protect the reefs. 
  • Finally, check the weather, follow local advice, and listen to your guides or lifeguards for a safe and fun underwater day.

Which activity are you most excited to try? Let us know in the comments!