Second Cathedral

Hawaii, United States

Depth

20m

Visibility

13m - 38m

Entry

Boat

Experience Level

Experienced

Second Cathedral

Hawaii, United States

Depth

20m

Visibility

13m - 38m

Entry

Boat

Experience Level

Experienced

About Second Cathedral

This dive site is a cavern dive just like First Cathedral. One will notice that the main chamber has a split down the middle two huge and impressive archways. Second Cathedral is larger than that of First Cathedral and boasts a large amount of marine life including invertebrates and shrimp but be sure to bring a dive light. So that you can fully admire the roof where one can see black coral trees and tubastrea. When conditions permit, one can enter the site through the roof of the main chamber or go through a dark hole. There are very big and friendly trumpet fish at this site as well as big eels. Outside the large cavern one can see blue-stripe snappers and pyramid butterfly fish.

Second Cathedral Dive Info

Terrain & Features

Rock, Other

Entry Type

Boat

Max Depth

20m

Visibility Range

13m – 38m

Experience Level

Experienced

Best Gas Mix

21% – 47%

O₂

CNS Load (35 min)

12% at 18m / 36%

O₂

Multi-Level Dive Planner

Photo gallery

No photos yet.

Be the first to share your shots from Second Cathedral. Your photos help other divers plan their trip.

Marine Life

Blue-Stripe Snappers
Cowrie Shells
Octopus
Pyramid Butterfly Fish

Weather Conditions

Water Temperature ℃

Dive Operators near Second Cathedral

View all operators in United States

Location

Dive Site Hazards

Bubble Trapping Under Overhangs — Rock overhangs can trap exhaled bubbles, reducing visibility and causing disorientation.
Reflected Surge Patterns — Surge reflecting off rock faces can create irregular and unpredictable water movement.
Current Funnel Effect — Narrow gaps between rocks can accelerate water flow unexpectedly.

Discover More

Discover United States

Connect with Operators

More Dive Sites

South America - Brazil

Brazil’s vast coastline and tropical islands make it a captivating destination for scuba diving enthusiasts. From the vibrant reefs of the Abrolhos Archipelago to the historic wrecks of Recife and the dramatic underwater cliffs of Fernando de Noronha, Brazil offers dive experiences for every level. With warm waters, incredible marine biodiversity, and breathtaking underwater landscapes, Brazil is a must-visit destination for divers seeking adventure, beauty, and cultural charm both above and below the surface.

Learn More

Asia - Philippines

The Philippines, a tropical paradise nestled in the heart of the Coral Triangle, is a premier destination for scuba diving enthusiasts. With over 7,000 islands, it boasts pristine coral reefs, breathtaking underwater landscapes, and a rich diversity of marine life. From the iconic Tubbataha Reefs to the thresher shark encounters in Malapascua, the Philippines offers unparalleled diving experiences for both beginners and seasoned divers. Whether exploring shallow coral gardens or delving into historic WWII wrecks, every dive unveils a new world of adventure.

Learn More

Oceania - Vanuatu

Vanuatu, a stunning South Pacific archipelago, offers some of the most diverse and exhilarating scuba diving experiences in the world. With its warm tropical waters, vibrant coral reefs, and historic wrecks like the famous SS President Coolidge, Vanuatu is a haven for divers of all skill levels. From exploring volcanic underwater landscapes to encountering rich marine biodiversity, Vanuatu’s pristine dive sites provide unforgettable adventures, all set against a backdrop of lush islands and tranquil lagoons.

Learn More