Anemonefish, shrimps and mantis shrimps. Part 2 of my documentary, “Mucky Secrets”, about the marine life of the Lembeh Strait in Indonesia. Watch the full 90-minute documentary at

In this video we take a look at the mutually symbiotic relationship between saddleback clownfish, a type of anemonefish, and the sea anemones found in the Lembeh Strait. The anemone’s stinging tentacles provide protection for the clownfish, which are immune to the sting. The clownfish chase sway polyp-eating predators, and their feces provide food for the anemone.

We then see how partner shrimps (commensal shrimps) also benefit from a commensal relationship with sea anemones. The shrimps use the anemone’s tentacles for protection, but the anemone doesn’t appear to benefit in any way.

We then take a look at emperor shrimps and sexy shrimps (squat shrimps), then finally at mantis shrimps. A number of different species of spearing mantis shrimps and smashing mantis shrimps live in the Lembeh Strait. They all have extremely advanced eyes and a very fast attack with their claws.

There are English captions showing either the full narration or the common and scientific names of the marine life, along with the dive site names.

The full Mucky Secrets nature documentary features a huge diversity of weird and wonderful marine animals including frogfish, nudibranchs, scorpionfish, crabs, shrimps, moray eels, seahorses, octopus, cuttlefish etc..

Thanks to James Kirsch a.k.a. generalfuzz ( & for the music track, “Second thoughts” and to Kevin MacLeod of for the music track, “Scheming Weasel (faster version)”. These tracks are licensed under a Creative Commons Attribution 3.0 Unported license.

Thanks to the staff and keen-eyed divemasters of Two Fish Divers ( for accommodation, diving services and critter-spotting.

The video was shot by Nick Hope with a Sony HVR-Z1P HDV camera in a Light & Motion Bluefin HD housing with Light & Motion Elite lights and a flat port. A Century +3.5 diopter was used for the most of the macro footage.

I have more scuba diving videos and underwater footage on my website at:

I post updates about my videos here:

Full list of marine life and dive sites featured in this video:

00:04 Saddleback Clownfish, Amphiprion polymnus, Aer Perang
00:09 Saddleback Clownfish, Amphiprion polymnus, Hairball
00:32 Saddleback Clownfish (juvenile), Amphiprion polymnus, Nudi Retreat
00:56 Holthuis Shrimp, Ancylomenes holthuisi, Aw Shucks
01:22 Magnificent Shrimp, Ancylomenes magnificus, Hairball
01:38 Tube Anemone, Cerianthus sp., Nudi Retreat
01:47 Magnificent Shrimp, Ancylomenes magnificus, Nudi Retreat
01:54 Night Anemone, Phyllodiscus semoni, Aer Perang
02:01 Graceful Anemone Shrimp, Ancylomenes venustus, Aer Perang
02:39 Curryfish Sea Cucumber, Stichopus horrens, Jahir
02:45 Emperor Shrimp, Periclimenes imperator, Jahir
02:55 Emperor Shrimp (male), Periclimenes imperator, Jahir
03:01 Emperor Shrimp (female), Periclimenes imperator, Jahir
03:19 Spotted Worm Sea Cucumber, Synapta maculata, TK 1 (Teluk Kembahu)
03:26 Emperor Shrimp (female), Periclimenes imperator, TK 1 (Teluk Kembahu)
03:32 Emperor Shrimp, Periclimenes imperator, Hairball
03:48 Emperor Shrimp (male), Periclimenes imperator, Hairball
03:59 Emperor Shrimp (female), Periclimenes imperator
04:07 Tube Anemone, Cerianthus sp., Critter Hunt
04:15 Sexy Shrimp, Thor amboinensis, Critter Hunt
04:22 Sexy Shrimp, Thor amboinensis, Aw Shucks
04:34 Orange Mantis Shrimp, Lysiosquilloides mapia, Retak Larry
05:05 Golden Mantis Shrimp, Lysiosquilla tredecimdentata, Jahir
05:17 Pink Tail Mantis Shrimp, Odontodactylus latirostris, TK 1 (Teluk Kembahu)
05:36 Peacock Mantis Shrimp, Odontodactylus scyllarus, Aw Shucks
06:02 Elegant Squat Lobster, Allogalathea elegans, Aer Perang