Finished this trip a couple days ago; doing rescue diver course in Puerto Galera now. Ear trouble caused me to miss eight out of the total thirty-two dives, but almost all of the rest were great.
I was shooting a Sony A6300 in a SeaFrogs Salted Line housing. Brought four lenses with me (7Artisans 7.5mm f/2.8 fisheye, Sony 10-18mm f/4, Sony 16-50mm f/3.5-5.6 PZ and Sony 90mm f/2.8 G Macro) along with four ports (4" dome, 8" dome, basic flat port and macro/telephoto port) and got the chance to use all of them in various combinations.
One photo from each dive that I took photos on (carried an empty housing on the first dive, so 23 total)
Nudibranch, Capitancillo Islet
Two Nembrotha kubaryana (variable neon slugs) mating, Chocolate Island Northwest, near Malapascua.
T-bar nudibranch, Chocolate Island Northeast, near Malapascua.
Thresher sharks, Monad Shoal, near Malapascua.
Mantis shrimp, Gato Island, near Malapascua
Porcelain crab, Gato Island Nudi City, near Malapascua.
Decorator crab with a large piece of broccoli coral, Gato Island Cove, near Malapascua.
Large jellyfish - no idea what species, but it was a couple feet across - at Monad Shoal, near Malapascua. Didn't meet any thresher sharks that dive, so it was a consolation prize.
First attempt to use a Weefine WFL05S +13 diopter in front of my 90mm macro lens - just some hard coral detail at Lapus Lapus, near Malapascua. These discs are maybe 5mm across.
Warty frogfish, Pescador Island, near Moalboal.
Corals, Tongo Point, Moalboal.
Sardines, Panagsama Beach, Moalboal. Missing EXIF data is due to 7Artisans 7.5mm fisheye not having any electronics in it.
Hermit crab carrying anemones, Turtle bay, Moalboal.
A pair of harlequin shrimp, Thalatta Resort house reef, Zamboaguita.
Nembrotha milleri nudibranch, Masaplod North, Dauin.
A pair of robust ghost pipefish, Secret Corner, Dauin.
Snake eel, Guinama-an, Dauin.
Whale shark, Oslob.
Tomato anemonefish, Napaling, Panglao.
Big-eye trevallys, Doljo Point, Panglao.
Dancing shrimp, Cambaquiz, Cabilao.
Seagrass, Talisay Tree, Cabilao.
Sea fan, Lighthouse / Gorgonian Wall, Cabilao.
Really wish the Retra Pro strobes I preordered in December hadn't been delayed as much as they have been - my SeaFrogs ST-100 Pro strobes clearly lacked reach on the large schools of fish, as well as, oddly, coverage on some CFWA scenes. UW-Technics TTL converter may have helped with the power issues of ST-100, but it wasn't ready in time for the trip either. Attempting to play with creative strobe positioning frequently yielded backscatter, massive dome reflections, or both - clearly I have a lot to learn there. On Monad Shoal and Oslob dives, we were prohibited from using any form of artificial lighting at all, so the quality suffered. On the second Monad Shoal dive, I decided to experiment by putting my 90mm macro lens behind a dome and shooting it wide-open at f/2.8, but the threshers never showed up and instead I got to play with a jellyfish. Really bummed about missing Apo Island, which should've produced some fabulous wide-angle shots, but better a missed dive than a torn eardrum.
Philippine Siren is a truly luxurious boat. Normally I wouldn't have even considered it due to cost ($4200 for ten nights/32 dives), but divebooker.com advertised a 40% off sale, and at $2520 it was a lot more reasonable. It is quite a large boat, too large to approach the dive sites by itself, so all the diving is conducted from two rigid-hull inflatables, and it only carries sixteen guests and fifteen staff - my previous liveaboard in Egypt had fourteen guests and seven staff in a boat that was half as long and half as wide.
The crew handle all the gear for the guests, including washing the wetsuits in dedicated tanks of water that are changed after every dive. There are two large camera rinse tanks, dedicated camera tables, a literal wall of power outlets for charging stuff in the main saloon, personal drawers at the camera tables and at diving gear stations. Before every dive they bring you a glass of water, and after every dive a glass of juice - after a night dive, it can be hot chocolate or a beer, on request.
Nitrox is free (as a matter of fact, nobody on the trip was using air), as is gear rental, though renting computers and torches carries a small surcharge. Soft drinks and beer are also free, but wine and cocktails are charged. The only mandatory fees are $155 Cebu port fee, plus an optional $30 for diving at Oslob (or $25 if you choose to snorkel rather than dive there) which some people avoid due to whale shark feeding there - for those, they organize a parallel dive in a nearby location.
My luggage - containing all my dive gear, all my clothes, and a part of my camera rig - was delayed by the airline (they forgot to load it at a connecting airport) and arrived two days late; when the boat was leaving its home base at Mactan Yacht Club, it was just landing in Manila - but it got to Cebu the next morning, and they had someone pick it up at the airport, drive to to Maya, and by the evening of the first day of diving, it joined me on the boat.
There are fire extinguishers everywhere, cabins have escape hatches going onto the main deck, there were multiple drills (muster stations, fire drill, emergency diver recall) conducted at the beginning of the trip, a round-the-clock watch is maintained at all times, and each of the two dinghies carries an oxygen kit onboard in addition to oxygen on the main boat, so they take safety quite seriously. Being made of wood, the boat creaks a bit, but I hardly noticed it. Incidentally, the dinghies also carry folding ladders, so getting out water does not require any special acrobatics.