Chondrichthyes // Cartilaginous Fish

Heterodontiformes // Bullhead Sharks

• Bullhead Shark

Orectolobiformes // Carpet Sharks

• Bamboo Shark
• Blind Shark
• Epaulette Shark
• Nurse Shark
• Whale Shark
• Wobbegong Shark
• Zebra Shark

Lamniformes // Mackerel Sharks

• Basking Shark
• Crocodile Shark
• Goblin Shark
• Great White Shark
• Mako Shark
• Megalodon †
• Megamouth Shark
• Salmon Shark
• Sand Tiger Shark
• Thresher Shark
  

Carcharhiniformes // Ground Sharks

• Blacktip Reef Shark
• Blue Shark
• Bonnethead Shark
• Bull Shark
• Daggernose Shark
• Finback Catshark
• Hammerhead Shark
• Lemon Shark
• Leopard Shark
• Oceanic Whitetip Shark
• Pyjama Shark
• Sandbar Shark
• Swell Shark
• Tiger Shark
  
• Weasel Shark
• Whitetip Reef Shark

Hexanchiformes // Frilled & Cow Sharks

• Cow Shark
• Frilled Shark

Squaliformes // Dogfish Sharks

• Cookie Cutter Shark
• Dogfish Shark
• Gulper Shark
• Lantern Shark
• Pocket Shark
• Rough Shark
• Sleeper Shark

Squatiniformes // Angel Sharks

• Angel Shark

Echinorhinidae // Bramble Sharks

• Bramble Shark

Pristiophoriformes // Saw Sharks

• Saw Shark

Holocephali // Chimaeras, Primitive Sharks

• Australian Ghostshark
• Blue Chimaera
• Edestus †
• Falcatus †
• Gulf Chimaera
• Helicoprion †
• Longnose Chimaera
• Sarcoprion †
• Spotted Ratfish
• Stethacanthus †

Other Prehistoric, Extinct Sharks †

• Bandringa †
• Cladoselache †
• Hybodus †
• Orthacanthus †

Rajiformes // Skates

• American Legskate
• Fanfin Skate
• Pluto Skate
• Spotted Skate
• Starry Skate
• Thorny Skate
• White Skate

Rhinopristiformes // Shovelnose Rays

• Bowmouth Guitarfish
• Common Guitarfish
• Fiddler Ray
• Giant Guitarfish
• Giant Shovelnose Ray
• Largetooth Sawfish
• Witch Guitarfish

Myliobatiformes // Stingrays

• Bat Eagle Ray
• Bluespotted Ribbontail Ray
• Butterfly Ray
• Cownose Ray
• Deep-water Stingray
• Devil Fish
• Honeycomb Whipray
• Manta Ray
• Ornate Eagle Ray
• Polka-dot Stingray
• Reef Stingray
• Sixgill Stingray
• Spotted Stingaree
• Striped Panray
• White-spotted Eagle Ray

Torpediniformes // Electric Rays

• Banded Numbfish
• Coffin Ray
• Common Torpedo Ray
• Ocellated Electric Ray
• Ornate Sleeper Ray
• Yellow-Spotted Fanray

Cnidaria // Jellyfish, Coral, Anemones

Cubozoa // Box Jellyfish

• Box Jellyfish

Scyphozoa // True Jellyfish

• Pacific Sea Nettle
  

Gastropoda // Slugs, Snails

Nudibranchia // Sea Slugs

• Chromodoris Annae
• Dusky Nembrotha
• Spanish Shawl

Thecosomata // Sea Butterflies

• Sea Angel

Sarcopterygii // Lobe-finned Fish

Actinistia // Coelacanths

• Coelacanth

Actinopterygii // Ray-finned Fish

Acipenseriformes // Sturgeons, Bichirs

• Sturgeon

Anguilliformes // True eels

• Moray Eel
• Garden Eel

Argentiniformes // Barreleyes

• Barreleye

Beloniformes // Flying Fishes

• Atlantic Flying Fish

Carangiformes // Dolphinfish, Remora

• Dolphinfish
• Remora

Characiformes // Piranhas, Tetras

• Bleeding Heart Tetra
• Piranha

Istiophoriformes // Swordfish, Barracudas

• Sailfish

Labriformes // Oarfish, Opah

• Hawaiian Cleaner Wrasse
• Humphead Wrasse
• Princess Parrotfish

Lampriformes // Oarfish, Opah

• Oarfish
• Opah

Lophiiformes // Anglerfish

• Anglerfish
• Giant Frogfish
• Goosefish

Osteoglossiformes // Arapaimas, Arowanas

• Arapaima
• Arowana

Perciformes // Common Bony Fish

• Achilles Tang
• Banggai Cardinalfish
• Blackcap Basslet
• Blue Ring Angelfish
• Clown Triggerfish
• Common Clownfish
• Copperband Angelfish
• Fire Dartfish
• Flame Angelfish
• Green Chromis
• Mandarinfish
• Moorish Idol
• Picturesque Dragonet
• Powder Blue Tang
• Royal Blue Tang
• Royal Gramma
• Scribbled Rabbitfish
• Threadfin Anthias
• Unicorn Tang
• Yellowhead Jawfish
• Yellow Tang

Saccopharyngiformes // Gulper Eels

• Gulper Eel

Scombriformes // Tunas, Mackerels

• Tuna

Scorpaeniformes // Scorpionfish

• Blobfish
• Lionfish

Syngnathiformes // Seahorses, Pipefish

• Leafy Sea Dragon
• Pygmy Seahorse
• Weedy Sea Dragon
• Yellow Seahorse

Tetraodontiformes // Sunfish, Boxfish, Puffers

• Long Horned Cowfish
• Ocean Sunfish
• Pufferfish

Agnatha // Jawless Fish

Ostracoderms // Armored Jawless Fish †

• Sacabambaspis

Mammalia // Mammals

Monotreme // Platypus, Echidna

• Platypus

Cetacea // Whales, Dolphins, Porpoises

• Atlantic Spotted Dolphin
• Beluga
• Blue Whale
• Commerson's Dolphin
• Hourglass Dolphin
• Narwhal
• Orca
• River Dolphin
• Risso's Dolphin

Sirenia // Manatees, Dugongs

• Dugong
• Manatee

Pinnipedia // Seals, Sea Lions, Walruses

• Sea Lion
• Walrus

Lutrinae // Otters

• River Otter
• Sea Otter

Miscellaneous, Non-Aquatic Mammals

• Amazonian Tapir
• Brushtail Possum
• Polar Bear
• Tamandua
• Wallaby

Cephalopoda // Octopuses, Squid

Nautiloidea // Nautiluses

• Chambered Nautilus

Argonauta // Paper Nautiluses

• Argonaut

Octopodiformes // Octopus, Vampire Squid

• Blanket Octopus
• Blue-ringed Octopus
• Coconut Octopus
• Flapjack Octopus
• Giant Pacific Octopus
• Mimic Octopus
• Vampire Squid

Decapodiformes // Squids, Cuttlefish

• Big Fin Squid
• Bobtail Squid
• Caribbean Reef Squid
• Colossal Squid
• Common Cuttlefish
• Flamboyant Cuttlefish
• Giant Cuttlefish
• Giant Squid
• Glass Squid
• Humboldt Squid
• Rams Head Squid
• Strawberry Squid

Amphibia // Amphibians, Axolotls

Urodela // Salamanders

• Axolotl
• Giant Salamander

Arthropods // Crustaceans, Spiders

Crustacea // Crabs, Lobsters, Shrimp, Krill

• Christmas Island Red Crab
• Harlequin Shrimp
• Vampire Crab

Xiphosura // Horseshoe Crabs

• Horseshoe Crab

Aves // Birds

Sphenisciformes // Penguins

• King Penguin

Alcidae // Auks

• Atlantic Puffin

Cryptodira // Turtles, Tortoises

Trionychia // Soft Shell Turtles

• Pig-Nosed Turtle

Chelonioidea // Sea Turtles

• Flatback Sea Turtle
• Green Sea Turtle
• Hawksbill Sea Turtle
• Kemp's Ridley Sea Turtle
• Leatherback Sea Turtle
• Loggerhead Sea Turtle
• Olive Ridley Sea Turtle

Echinodermata // Starfish, Urchins

Asteroidea // Sea Stars

• Chocolate Chip Sea Star

Holothuroidea // Sea Cucumbers

• Sea Pig

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