http://reefguide.orgA Guide To The Tropical Reefs)http://reefguide.org/blueblackurchin.html<img src="http://reefguide.org/pix/thumb3/blueblackurchin1.jpg" /><br />Blue-Black Urchin (Echinothrix diadema)<br />Category: Sea Urchins<br />Size: 4 to 8 in. (10 to 20 cm)<br />Depth: 3-30 ft. (1-10 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/commonrazorcoral.html<img src="http://reefguide.org/pix/thumb3/commonrazorcoral1.jpg" /><br />Common Razor Coral (Fungia scutaria)<br />Category: Stony Corals<br />Size: 4 to 7 in. (10 to 18 cm)<br />Depth: 3-30 ft. (1-10 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea<br />http://reefguide.org/bluefintrevally.html<img src="http://reefguide.org/pix/thumb3/bluefintrevally1.jpg" /><br />Bluefin Trevally (Caranx melampygus)<br />Category: Jacks<br />Size: 1.5 to 3.5 ft. (45 to 100 cm)<br />Depth: 10-300 ft. (3-90 m)<br />Distribution: Indo-Pacific, Hawaii, Polynesia<br />http://reefguide.org/mangrovetunicate.html<img src="http://reefguide.org/pix/thumb3/mangrovetunicate1.jpg" /><br />Mangrove Tunicate (Ecteinascidia turbinata)<br />Category: Tunicates<br />Size: 0.5 to 1 in. (1 to 2.5 cm)<br />Depth: 1-40 ft. (0-12 m)<br />Distribution: Caribbean, Bahamas, Florida<br />http://reefguide.org/almacojack.html<img src="http://reefguide.org/pix/thumb3/almacojack1.jpg" /><br />Almaco Jack (Seriola rivoliana)<br />Category: Jacks<br />Size: 1 to 2 ft. (30 to 60 cm)<br />Depth: 50-180 ft. (15-55 m)<br />Distribution: Circumtropical<br />http://reefguide.org/atlanticgraycowry.html<img src="http://reefguide.org/pix/thumb3/atlanticgraycowry1.jpg" /><br />Atlantic Gray Cowry (Cypraea cinerea)<br />Category: Gastropods<br />Size: 0.5 to 1 in. (1 to 2.5 cm)<br />Depth: 20-50 ft. (6-15 m)<br />Distribution: Caribbean, Bahamas, Florida<br />http://reefguide.org/crownofthorns.html<img src="http://reefguide.org/pix/thumb3/crownofthorns1.jpg" /><br />Crown-Of-Thorns (Acanthaster planci)<br />Category: Sea Stars<br />Size: 8 to 24 in. (20 to 60 cm)<br />Depth: 3-150 ft. (1-45 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea, Polynesia, East Pacific<br />http://reefguide.org/palenoseparrotfish.html<img src="http://reefguide.org/pix/thumb3/palenoseparrotfish1.jpg" /><br />Palenose Parrotfish (Scarus psittacus)<br />Category: Parrotfishes<br />Size: 9 to 12 in. (22 to 30 cm)<br />Depth: 6-80 ft. (2-25 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea, Polynesia<br />http://reefguide.org/bulletheadparrotfish.html<img src="http://reefguide.org/pix/thumb3/bulletheadparrotfish1.jpg" /><br />Bullethead Parrotfish (Chlorurus spilurus)<br />Category: Parrotfishes<br />Size: 10 to 15 in. (25 to 38 cm)<br />Depth: 10-90 ft. (3-27 m)<br />Distribution: Hawaii, Pacific<br />http://reefguide.org/medusaworm.html<img src="http://reefguide.org/pix/thumb3/medusaworm2.jpg" /><br />Medusa Worm (Loimia medusa)<br />Category: Spaghetti Worms<br />Size: Tentacle to 18 in. (45 cm)<br />Depth: 10-130 ft. (3-40 m)<br />Distribution: Circumtropical<br />http://reefguide.org/ocellateswimmingcrab.html<img src="http://reefguide.org/pix/thumb3/ocellateswimmingcrab1.jpg" /><br />Ocellate Swimming Crab (Portunus sebae)<br />Category: True Crabs<br />Size: 2 to 4 in. (5 to 10 cm)<br />Depth: 20-90 ft. (6-27 m)<br />Distribution: Caribbean, Bahamas, Florida<br />http://reefguide.org/leopardflatworm.html<img src="http://reefguide.org/pix/thumb3/leopardflatworm5.jpg" /><br />Leopard Flatworm (Pseudobiceros pardalis)<br />Category: Flatworms<br />Size: 1 to 2 in. (2 to 5 cm)<br />Depth: 15-75 ft. (5-23 m)<br />Distribution: Caribbean, Bahamas, Florida<br />http://reefguide.org/squamosechiton.html<img src="http://reefguide.org/pix/thumb3/squamosechiton1.jpg" /><br />Squamose Chiton (Chiton squamosum)<br />Category: Chitons<br />Size: 2 to 3 in. (5 to 8 cm)<br />Depth: 0-3 ft. (0-1 m)<br />Distribution: Caribbean<br />http://reefguide.org/Nassariuspapillosus.html<img src="http://reefguide.org/pix/thumb3/Nassariuspapillosus1.jpg" /><br />Pimpled Basket Shell (Nassarius papillosus)<br />Category: Gastropods<br />Size: 1 to 2 in. (2.5 to 5 cm)<br />Depth: 10-60 ft. (3-18 m)<br />Distribution: Indo-Pacific, Hawaii, Polynesia<br />http://reefguide.org/linckiaseastar.html<img src="http://reefguide.org/pix/thumb3/linckiaseastar1.jpg" /><br />Linckia Sea Star (Linckia multifora)<br />Category: Sea Stars<br />Size: 2 to 5 in. (5 to 13 cm)<br />Depth: 1-120 ft. (0-37 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea<br />http://reefguide.org/peacockgrouper.html<img src="http://reefguide.org/pix/thumb3/peacockgrouper1.jpg" /><br />Peacock Grouper (Cephalopholis argus)<br />Category: Groupers<br />Size: 10 to 20 in. (25 to 50 cm)<br />Depth: 3-45 ft. (1-15 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea, Polynesia<br />http://reefguide.org/jeweledanemonehermitcrab.html<img src="http://reefguide.org/pix/thumb3/jeweledanemonehermitcrab1.jpg" /><br />Jeweled Anemone Hermit Crab (Dardanus pedunculatus)<br />Category: Hermit Crabs<br />Size: 1 to 3 in. (2 to 7 cm)<br />Depth: 0-100 ft. (0-30 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/whitebandedhermit.html<img src="http://reefguide.org/pix/thumb3/whitebandedhermit1.jpg" /><br />Whitebanded Hermit Crab (Calcinus seurati)<br />Category: Hermit Crabs<br />Size: 1 to 2 in. (2 to 5 cm)<br />Depth: 0-30 ft. (0-10 m)<br />Distribution: Hawaii, Indo-West Pacific<br />http://reefguide.org/bandedurchin.html<img src="http://reefguide.org/pix/thumb3/bandedurchin1.jpg" /><br />Banded Urchin (Echinothrix calamaris)<br />Category: Sea Urchins<br />Size: 4 to 8 in. (10 to 20 cm)<br />Depth: 5-150 ft. (2-45 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/hawaiiansergeant.html<img src="http://reefguide.org/pix/thumb3/hawaiiansergeant3.jpg" /><br />Hawaiian Sergeant (Abudefduf abdominalis)<br />Category: Damselfishes<br />Size: 4 to 8 in. (10 to 20 cm)<br />Depth: 1-30 ft. (0-10 m)<br />Distribution: Hawaii (Endemic)<br />http://reefguide.org/harlequinshrimp.html<img src="http://reefguide.org/pix/thumb3/harlequinshrimp3.jpg" /><br />Harlequin Shrimp (Hymenocera picta)<br />Category: Shrimps<br />Size: 1 to 2 in. (2 to 5 cm)<br />Depth: 3-60 ft. (1-18 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea, Polynesia<br />http://reefguide.org/hawaiiandascyllus.html<img src="http://reefguide.org/pix/thumb3/hawaiiandascyllus4.jpg" /><br />Hawaiian Dascyllus (Dascyllus albisella)<br />Category: Damselfishes<br />Size: 3 to 5 in. (8 to 13 cm)<br />Depth: 30-150 ft. (10-45 m)<br />Distribution: Hawaii (Endemic)<br />http://reefguide.org/collectorurchin.html<img src="http://reefguide.org/pix/thumb3/collectorurchin2.jpg" /><br />Collector Urchin (Tripneustes gratilla)<br />Category: Sea Urchins<br />Size: 4 to 6 in. (10 to 15 cm)<br />Depth: 5-100 ft. (2-30 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea<br />http://reefguide.org/pincushionseastar.html<img src="http://reefguide.org/pix/thumb3/pincushionseastar3.jpg" /><br />Pin Cushion Sea Star (Culcita novaeguineae)<br />Category: Sea Stars<br />Size: 7 to 10 in. (18 to 25 cm)<br />Depth: 3-100 ft. (1-30 m)<br />Distribution: Indo-Pacific, Hawaii, Polynesia<br />http://reefguide.org/dayoctopus.html<img src="http://reefguide.org/pix/thumb3/dayoctopus2.jpg" /><br />Day Octopus (Octopus cyanea)<br />Category: Octopuses<br />Size: 1 to 3 ft. (30 to 90 cm)<br />Depth: 5-75 ft. (2-23 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/blotchedswimmingcrab.html<img src="http://reefguide.org/pix/thumb3/blotchedswimmingcrab1.jpg" /><br />Blotched Swimming Crab (Portunus spinimanus)<br />Category: True Crabs<br />Size: 2 to 3 in. (5 to 8 cm)<br />Depth: 0-300 ft. (0-90 m)<br />Distribution: Caribbean, Bahamas, Florida, Gulf of Mexico<br />http://reefguide.org/yellowspottedguardcrab.html<img src="http://reefguide.org/pix/thumb3/yellowspottedguardcrab1.jpg" /><br />Yellow-Spotted Guard Crab (Trapezius flavopunctata)<br />Category: True Crabs<br />Size: 0.7 to 1 in. (2 to 2.5 cm)<br />Depth: <br />Distribution: Hawaii<br />http://reefguide.org/gildedtriggerfish.html<img src="http://reefguide.org/pix/thumb3/gildedtriggerfish3.jpg" /><br />Gilded Triggerfish (Xanthichthys auromarginatus)<br />Category: Triggerfishes<br />Size: 8 to 12 in. (20 to 30 cm)<br />Depth: 45-180 ft. (15-55 m)<br />Distribution: Indo-West Pacific, Hawaii<br />http://reefguide.org/pinktailtriggerfish.html<img src="http://reefguide.org/pix/thumb3/pinktailtriggerfish1.jpg" /><br />Pinktail Triggerfish (Melichthys vidua)<br />Category: Triggerfishes<br />Size: 8 to 12 in. (20 to 30 cm)<br />Depth: 12-180 ft. (4-55 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/whitespottedpuffer.html<img src="http://reefguide.org/pix/thumb3/whitespottedpuffer1.jpg" /><br />Whitespotted Puffer (Arothron hispidus)<br />Category: Pufferfishes<br />Size: 10 to 19 in. (25 to 48 cm)<br />Depth: 3-150 ft. (1-45 m)<br />Distribution: Indo-Pacific, Hawaii, Northwest Pacific<br />http://reefguide.org/wedgetailtriggerfish.html<img src="http://reefguide.org/pix/thumb3/wedgetailtriggerfish1.jpg" /><br />Wedgetail Triggerfish (Rhinecanthus rectangulus)<br />Category: Triggerfishes<br />Size: 8 to 10 in. (20 to 25 cm)<br />Depth: 3-30 ft. (1-10 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea<br />http://reefguide.org/scythetriggerfish.html<img src="http://reefguide.org/pix/thumb3/scythetriggerfish3.jpg" /><br />Scythe Triggerfish (Sufflamen bursa)<br />Category: Triggerfishes<br />Size: 7 to 9 in. (18 to 24 cm)<br />Depth: 10-180 ft. (3-55 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/redslatepencilurchin.html<img src="http://reefguide.org/pix/thumb3/redslatepencilurchin1.jpg" /><br />Red Slate Pencil Urchin (Heterocentrotus mammillatus)<br />Category: Sea Urchins<br />Size: 5 to 10 in. (12 to 25 cm)<br />Depth: 3-160 ft. (1-50 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/reticulatedcowry.html<img src="http://reefguide.org/pix/thumb3/reticulatedcowry1.jpg" /><br />Reticulated Cowry (Cypraea maculifera)<br />Category: Gastropods<br />Size: 3 to 5 in. (7 to 12 cm)<br />Depth: 3-80 ft. (1-25 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/tigercowry.html<img src="http://reefguide.org/pix/thumb3/tigercowry1.jpg" /><br />Tiger Cowry (Cypraea tigris)<br />Category: Gastropods<br />Size: 3 to 5 in. (7 to 12 cm)<br />Depth: 3-80 ft. (1-25 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/whitemouthmoray.html<img src="http://reefguide.org/pix/thumb3/whitemouthmoray4.jpg" /><br />whitemouth Moray Eel (Gymnothorax meleagris)<br />Category: Moray Eels<br />Size: 3 to 4 ft. (90 cm to 1.2 m)<br />Depth: 3-120 ft. (1-37 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/dwarfmoray.html<img src="http://reefguide.org/pix/thumb3/dwarfmoray1.jpg" /><br />Dwarf Moray Eel (Gymnothorax melatremus)<br />Category: Moray Eels<br />Size: 5 to 8 in. (13 cm to 30 cm)<br />Depth: 30-180 ft. (10-55 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/undulatedeel.html<img src="http://reefguide.org/pix/thumb3/undulatedeel1.jpg" /><br />Undulated Moray Eel (Gymnothorax undulatus)<br />Category: Moray Eels<br />Size: 3 to 5 ft. (90 cm to 1.5 m)<br />Depth: 3-15 ft. (1-5 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea<br />http://reefguide.org/yellowmarginmoray.html<img src="http://reefguide.org/pix/thumb3/yellowmarginmoray1.jpg" /><br />Yellowmargin Moray Eel (Gymnothorax flavimarginatus)<br />Category: Moray Eels<br />Size: 3 to 5 ft. (90 cm to 1.5 m)<br />Depth: 3-300 ft. (1-90 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea<br />http://reefguide.org/Pseudobicerosdimidiatus.html<img src="http://reefguide.org/pix/thumb3/Pseudobicerosdimidiatus1.jpg" /><br />Divided Flatworm (Pseudobiceros cf. dimidiatus)<br />Category: Flatworms<br />Size: 1 to 2 in. (2 to 5 cm)<br />Depth: 15-100 ft. (5-30 m)<br />Distribution: Hawaii<br />http://reefguide.org/whitemarginnudi.html<img src="http://reefguide.org/pix/thumb3/whitemarginnudi1.jpg" /><br />White-Margin Nudibranch (Glossodoris rufomarginata)<br />Category: Nudibranchs<br />Size: 1 to 2 in. (2.5 to 5 cm)<br />Depth: 15-100 ft. (5-30 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea<br />http://reefguide.org/friedeggnudi.html<img src="http://reefguide.org/pix/thumb3/friedeggnudi1.jpg" /><br />Fried-Egg Nudibranch (Phyllidia varicosa)<br />Category: Nudibranchs<br />Size: 2 to 3 in. (5 to 8 cm)<br />Depth: 15-100 ft. (5-30 m)<br />Distribution: Indo-Pacific, Hawaii, Red Sea<br />http://reefguide.org/fourspotbutterflyfish.html<img src="http://reefguide.org/pix/thumb3/fourspotbutterflyfish1.jpg" /><br />Fourspot Butterflyfish (Chaetodon quadrimaculatus)<br />Category: Butterflyfishes<br />Size: 4 to 6 in. (10 to 15 cm)<br />Depth: 5-45 ft. (2-15 m)<br />Distribution: Nothern Pacific, Hawaii, Polynesia<br />http://reefguide.org/ornatebutterfly.html<img src="http://reefguide.org/pix/thumb3/ornatebutterfly1.jpg" /><br />Ornate Butterflyfish (Chaetodon ornatissimus)<br />Category: Butterflyfishes<br />Size: 4 to 7 in. (10 to 18 cm)<br />Depth: 10-90 ft. (3-27 m)<br />Distribution: Indo-Pacific, Hawaii<br />http://reefguide.org/goldlace.html<img src="http://reefguide.org/pix/thumb3/goldlace1.jpg" /><br />Gold-Lace Nudibranch (Halgerda terramtuentis)<br />Category: Nudibranchs<br />Size: 1 to 2 in. (2 to 5 cm)<br />Depth: 15-100 ft. (5-30 m)<br />Distribution: Hawaii (Endemic)<br />