If you are a photographer or a lover of anything weird and wonderful, you probably already know that Dauin is the jewel of muck diving in the Philippines. While our volcanic sands and bustling reefs offer marine life treasures 365 days a year, the ocean has its own unique cyclical rhythm.
While you will have incredible dives here in any season, certain months bring unique biological events. From spring baby booms to October mating rituals, here is your guide to timing your visit to Atmosphere Resorts & Spa for the ultimate critter encounters.
Cuttlefish Eggs. Photo by Daniel Geary
Seasonal Highlights
The Baby Boom: February – May
This is the season of new life, as the reefs and sandy slopes become a nursery for some of the ocean’s most charismatic residents. The warming waters trigger a massive surge in reproductive success, making this transitional time very exciting especially for super-macro enthusiasts.
- Cuttlefish Eggs: Look for tiny eggs tucked into the crevices of fire coral or attached to substrates like driftwood or even discarded coconuts.
- Mouth brooders: look closely at the cardinal fish and jawfish, during these months males are often seen with a mouthful of shimmering silver eggs, occasionally churning them to oxygenate the eggs
- Pipefish with eggs: look closely at the underside of these beautiful fish, often found in pairs, to spot their egg masses!
The “Shaun the Sheep” nudibranch: (Costasiella kuroshimae) These tiny sap-sucking slugs are particularly abundant on their host algae (Avrainvillea) during this window.
Frogfish & Ghost Pipefish Peak: March – June
Dauin is world-famous for its diverse frogfish populations. During these months, the density of these masters of camouflage reaches its peak.
What to look for:
- While giant frogfish and painted frogfish are year-round staples, the rare hairy frogfish (Antennarius striatus) is more commonly sighted in the sandy patches during these months. You’ll often find needlepoint-sized juveniles. These miniature hunters come in every color of the rainbow (yellow, purple, orange and jet black) often hiding in plain sight among the sponges.
Rare hairy frogfish (Antennarius striatus). Photo by Yazid El Shaari
You will find pairs, often a large female and a tiny male, of ornate and robust ghost pipefish hovering head-down near crinoids or seagrass. In this season, females are often seen with their pelvic fins fused to form a pouch for their eggs.
Mototi Octopus Photo by Vijay Raman
Cephalopod Season: October – January
For many divers, this is the holy grail window. As the waters cool slightly, these intelligent and elusive creatures of the muck come out to play. This is the prime time for active hunting and mating behaviors among cephalopods.
What to look for:
- This is the best chance to spot the fantastic five: blue-ringed, mimic, mototi, algae and wonderpus octopuses. It’s even possible to spot them all in one dive site!
- Because this coincides with mating season, the behavior of these usually shy creatures is much more active and visible as they hunt, search for mates, and defend territory.
- Besides octopus, you’ll also be able to find bobtail squid, pygmy cuttlefish, and a range of other cephalopods.
Green turtle. Photo by Vijay Raman
Year-Round Residents
Don’t worry if your travel dates fall outside these windows, the waters of Dauin are never quiet. At Atmosphere, we are lucky to have world-class regulars that call our coastline home throughout the year.
What to look for:
- Pelagic Classics: Our day trips to Apo Island consistently deliver sightings of Green and Hawksbill turtles, along with massive schools of trevally.
- Macro Staples: Seahorses, hundreds of nudibranchs, crazy crustaceans like the harlequin shrimp, and the spectacular flamboyant cuttlefish are seen across our dive sites every month.
- The Sunset Show: Every evening at dusk, the mandarinfish perform their famous mating dance right on our doorstep.
Diving Logistics Tip
Visibility: Best from April to June (up to 30m), though muck diving often favors the lower visibility of the Octopus Season, which keeps the rare critters more active during daylight.
Water Temperature: Expect 27°C – 29°C. If you plan to do 3–4 dives a day, a 3mm long wetsuit is usually the standard recommendation for comfort.
No matter what time of year you come to dive in Dauin, we’re sure you won’t be disappointed with our incredible variety of marine life and world class diving. However, if you have some flexibility, knowing which creatures and experiences you prefer can help you align your trip with the best season for your preferences. Reach out to us today to discuss your underwater wish list, and we can help you pinpoint the perfect dates to turn your dream dive into a reality at Atmosphere!
