Indo-Pacific
The heart of marine biodiversity — the Coral Triangle, Great Barrier Reef, and surrounding seas hold more reef species than anywhere else on Earth.
1,073 species
Sub-regions
Sand-sifting Goby
FishAmblygobius rainfordi
A sand-sifting goby that thrives in reef flats across the wide Western Pacific.
Sarasin's Goby
FishMugilogobius sarasinorum
A rare Sulawesi lake goby found nowhere else on Earth.
Scalpel Coral
CoralGalaxea horrescens
A branching coral with ghostly white-tipped tentacles that emerge after dark.
Scissortail Dartfish
FishPtereleotris evides
A graceful reef dartfish that hovers in open water and pairs for life.
Scooter Blenny
FishSynchiropus ocellatus
A reef-floor hunter with detailed patterns and a surprisingly long lifespan.
Scopas Tang
FishZebrasoma scopas
A reef grazer that keeps algae in check across vast Indo-Pacific waters.
Scribbled Angelfish
FishChaetodontoplus duboulayi
A boldly patterned reef angel that's surprisingly easygoing for its size.
Scribbled Pufferfish
FishArothron mappa
A boldly patterned puffer that roams reef drop-offs with calm, solitary confidence.
Sea Fan
CoralAnthogorgia caerulea
A Red Sea sea fan that brings graceful branching structure to reef displays.
Sea Fan
CoralPerissogorgia vitrea
A graceful sea fan from the Western South Pacific, surprisingly approachable for new reef keepers.
Sea Fan
CoralPseudopterogorgia fredericki
A flowing North Indian Ocean sea fan that rewards attentive reef keepers.
Sea Pony
FishHippocampus fuscus
A monogamous, eelgrass-dwelling seahorse from the Indian Ocean with pair-bonding rituals.
Seaweed Of Death From Hana
CoralPalythoa toxica
The most toxic coral on the reef, native only to Hawaii.
Sea Whip
CoralEllisella ceratophyta
A rare New Caledonian sea whip bringing wild reef structure to the aquarium.
Sea Whip
CoralJunceella juncea
A slender, unbranched sea whip that brings dramatic vertical structure to reef tanks.
Sebae Anemone
InvertHeteractis crispa
A large, long-tentacled anemone that hosts clownfish but demands strong light and stable water.
Serpent Coral
CoralPachyseris foliosa
Frilly, whorl-forming coral that brings sculptural elegance to protected reef displays.
Serpent Coral
CoralPachyseris gemmae
A sculptural Pacific coral with flowing, folded fronds built for semi-protected reefs.
Serpent Coral
CoralPachyseris rugosa
A sprawling, contorted plate coral with an ancient, sculptural look.
Serpent Coral
CoralPachyseris speciosa
Sweeping plate-like coral with detailed serpentine ridges built for lower reef life.
Sevenband Butterflyfish
FishChaetodon punctatofasciatus
A boldly patterned reef butterfly that pairs for life and rarely strays far from coral.
Sexy Shrimp
InvertThor amboinensis
Tiny reef shrimp with a wiggling rear end that never stops moving.
Side-attached Plate Coral
CoralAcropora simplex
A deep-reef plate coral that pushes the limits of what home systems can sustain.
Sinuous Cup Coral
CoralAustralophyllia wilsoni
A cold-water beauty that thrives where most reef corals fear to go.
Sinuous Cup Coral
CoralLobophyllia agaricia
A forgiving large polyp coral with flowing, brain-like ridges and rich coloration.
Sinuous Cup Coral
CoralLobophyllia erythraea
A forgiving large-polyp coral from the Red Sea with flowing, brain-like ridges.
Sinuous Cup Coral
CoralLobophyllia hassi
A forgiving large-polyp coral with flowing, brain-like ridges perfect for reef beginners.
Sinuous Cup Coral
CoralLobophyllia radians
A wide-ranging cup coral that forgives beginner mistakes and rewards patient hobbyists.
Sinuous Cup Coral
CoralLobophyllia recta
A forgiving large-polyp coral with flowing, sculptural form for reef beginners.
Sinuous Cup Coral
CoralLobophyllia valenciennesii
A flowing, brain-like coral that beginners can actually keep with confidence.
Six-line Wrasse
FishPseudocheilinus hexataenia
A bold, reef-safe hunter that punches well above its size in attitude.
Skunk Cleaner Shrimp
InvertLysmata amboinensis
The reef's tiny cleaning crew, grooming fish who line up for the service.
Skunk clownfish
FishAmphiprion akallopisos
The pale skunk stripe makes this anemonefish one of the most recognizable in the ocean.
Sky Blue Coral
CoralAcropora nana
A delicate branching coral with cool blue and purple tones for expert reefers.
Slipper Coral
CoralHerpolitha limax
A free-living, tongue-shaped coral that roams lagoon floors on its own terms.
Small Knob Coral
CoralAstrea devantieri
Bold red-and-green boulder coral from the lesser-explored western Indian Ocean.