Palawan for Nature Lovers: The Philippines' Last Ecological Frontier
Palawan is called the Philippines' "Last Frontier" for a reason that has nothing to do with marketing. This 450km-long island has one of the highest concentrations of endemic species in Southeast Asia, a reef system that UNESCO protects, and a rainforest canopy that hasn't been touched by industrial logging.
For nature lovers, Palawan isn't just another tropical island. It's a biological treasury that happens to have some of the best diving, kayaking, and hiking in the world.
Why Palawan Is Ecologically Special
Palawan sits on a separate tectonic plate from the rest of the Philippines. While the other 7,640 Philippine islands emerged from volcanic activity along the Pacific Ring of Fire, Palawan rifted away from mainland Asia millions of years ago, carrying its flora and fauna with it.
The result: species found nowhere else. The Palawan peacock-pheasant, the Palawan bearcat, the Philippine mouse-deer, the Palawan forest turtle. These animals evolved in isolation on an island that never connected to the rest of the archipelago.
The Cleopatra's Needle mountain range in the island's center contains primary rainforest that may be 130 million years old — one of the oldest continuously forested areas in Asia.
Top 10 Nature Experiences
1. Puerto Princesa Subterranean River
The underground river is the headliner, and it deserves the attention. A boat ride through 1.5km of a navigable cave river (the full river is 8.2km — one of the longest underground rivers in the world) past stalactite formations that have been growing for millions of years.
The cave's cathedral chamber is estimated to be 60m high. The Italian Grotto section has formations that resemble organ pipes. Swiftlet birds nest in the cave entrance; bats take over deeper inside.
Permit: 200 PHP ($3.50). Day trip from Puerto Princesa: 1,500-2,000 PHP ($26-35). Go early — the 8AM boats see the cave with the calmest water.
2. Tubbataha Reefs Natural Park
A UNESCO World Heritage Site in the middle of the Sulu Sea. Two coral atolls and a reef system covering 97,030 hectares. The reef walls drop vertically to 100m, supporting 600 fish species, 360 coral species, and regular sightings of hammerhead sharks, manta rays, and whale sharks.
Access: liveaboard only, March-June. Cost: $2,000-3,500 for 6-day trips. This is top-tier world diving — Tubbataha consistently ranks in the global top 10.
3. El Nido's Karst Landscape
The limestone karst formations of the Bacuit Bay archipelago were formed 250 million years ago as ancient coral reefs. Tectonic uplift pushed them above sea level, and erosion sculpted the dramatic cliff faces, hidden lagoons, and cave systems.
The Big Lagoon and Small Lagoon (Tour A) are enclosed bodies of water within karst formations — geological bowls filled by the sea. The water is warmer inside the lagoons than outside, and the lack of wave action makes the surface glass-smooth.
Kayaking through the lagoons at dawn (before the tour boats arrive, arrange a private morning trip for 2,500-3,500 PHP / $44-62) is one of the most serene paddling experiences in Asia.
4. Coron's Freshwater-Saltwater Lakes
Kayangan Lake and Barracuda Lake in Coron are thermocline lakes — freshwater sits on top, saltwater seeps in through the limestone below. The temperature changes as you swim deeper: warm on top, suddenly cold at the freshwater-saltwater boundary, then warm again below.
Barracuda Lake is especially popular with freedivers. The visibility exceeds 30 meters, and the underwater landscape of submerged limestone formations looks like an alien planet. Named for a single giant barracuda that reportedly lived in the lake for years.
In 1976, President Marcos relocated African animals — giraffes, zebras, gazelles — to Calauit Island off Palawan's northern tip. Nearly 50 years later, the animals have thrived. It's a surreal experience: African safari animals on a Philippine island, alongside native Calamian deer and Palawan wildlife.
The park also serves as a conservation area for the endangered Calamian deer. A guide is mandatory. Day trips from Coron: 2,500-4,000 PHP ($44-71).
6. Iwahig Firefly Watching
Evening boat rides on the Iwahig River near Puerto Princesa to see firefly displays in the mangroves. The fireflies synchronize their flashing — entire trees blink in unison, creating a light show that no technology replicates.
The phenomenon is caused by a specific species (Pteroptyx) that uses synchronous flashing for mating communication. The display is best during new moon phases when the sky is darkest.
Tours: 800-1,200 PHP ($14-21), departing 6:30PM.
7. Sabang Mangrove Forest
The mangrove forest near the Underground River entrance is a paddleboard and kayak paradise. The root systems support juvenile fish, crabs, monitor lizards, and kingfishers. Guided kayak tours (500-800 PHP / $8.80-14) take you through channels where the mangrove canopy forms a tunnel overhead.
The mangroves serve as the nursery for much of Palawan's coastal ecosystem. Without them, the fish populations that support the reefs would collapse.
8. Snorkeling at Reef Gardens
Palawan's house reefs — accessible from shore without boat trips — are better than many destinations' best boat-access sites. Recommended spots:
Siete Pecados (Coron): 7 small islets with coral gardens, 15 minutes from Coron town. Included in most island-hopping tours.
Shimizu Island (El Nido, Tour C): table corals, clownfish in anemones, and occasionally sea turtles.
Depeldet Island (El Nido, private boat): pristine reef with minimal tourist impact.
Rent mask and snorkel in any town: 200-300 PHP ($3.50-5.30) per day.
9. Birdwatching in St. Paul Subterranean River National Park
Beyond the underground river itself, the surrounding national park hosts 252 bird species, including Palawan endemics: the Palawan peacock-pheasant (one of the world's most beautiful birds), the Palawan hornbill, and the Palawan flycatcher.
The Monkey Trail (2km jungle path parallel to the cave river) is the best birdwatching route. Go at dawn with a guide who knows the bird calls. Monitor lizards and long-tailed macaques are common along the trail.
Park entry included with Underground River permit.
10. Sea Turtle Encounters
Green and hawksbill sea turtles are common around El Nido and Coron. The turtles feed in seagrass beds and rest under coral ledges. Responsible snorkeling encounters (maintain 3m distance, don't touch, no flash photography) are possible at:
El Nido: Big Lagoon area and Dilumacad Island
Coron: Banana Island seagrass beds
Puerto Princesa: Honda Bay
No special tour needed — turtles appear regularly on standard island-hopping routes. But don't chase them.
Conservation Reality
Palawan faces real environmental pressures. Mining concessions threaten forested areas. Overfishing depletes some reefs. Tourism infrastructure outpaces waste management in El Nido and Coron — plastic waste is visible on some beaches.
What you can do:
Use reef-safe sunscreen (oxybenzone and octinoxate damage coral)
Refuse single-use plastics (bring a reusable water bottle — most hostels and hotels offer refill stations)
Choose operators who follow environmental guidelines (no touching marine life, no anchoring on coral)
Pay the environmental fees without complaint — they fund park maintenance and enforcement
Best Time for Wildlife
Month
Highlight
Nov-Feb
Best diving visibility (30m+), whale sharks at Tubbataha approach season
Mar-Jun
Tubbataha season, sea turtles nesting, manta ray sightings peak
Jul-Sep
Green season, lush forests, good birdwatching, fewer tourists
Oct
Transition month, firefly season peaks
The Bottom Line
Palawan is one of the last places in Southeast Asia where the natural environment is the primary attraction, not a backdrop for resort amenities. The underground river is a geological wonder. The reefs are healthy and abundant. The endemic species are found nowhere else.
It won't stay this way forever. Tourism is growing rapidly — El Nido's infrastructure is already strained. Visit now. Visit responsibly. And leave nothing behind but footprints. For another top-tier nature destination in the region, Borneo offers orangutans and ancient rainforest.
