- Pacific Angelshark
- Pacific Barracuda
- Pacific Blackdragon
- Pacific Cod
- Pacific Electric Ray
- Pacific Footballfish
- Pacific Gopher Rockfish
- Pacific Grenadier
- Pacific Hagfish
- Pacific Halibut
- Pacific Herring
- Pacific Lamprey
- Pacific Mackerel
- Pacific Menhaden
- Pacific Moonfish
- Pacific Needlefish
- Pacific Ocean Perch
- Pacific Oyster
- Pacific Red Octopus
- Pacific Sailfish
- Pacific Sand Dab
- Pacific Sardine
- Pacific Sea Nettle
- Pacific Sleeper Shark
- Pacific Spiny Lumpsucker
- Pacific Spotted Dolphin
- Pacific Stargazer
- Pacific Tomcod
- Pacific White Shrimp
- Pacific White-Sided Dolphin
- Pacific Wobbegong
- Painted Comber
- Painted Frogfish
- Painted Lobster
- Painted Sweetlips
- Pajama Cardinalfish
- Pale Catshark
- Pale Red Sea Star
- Pallid Eelpout
- Pallid Sole
- Panfish
- Paper Nautilus
- Parrotfish
- Peacock Flounder
- Peacock Mantis Shrimp
- Pelagic Cormorant
- Pelagic Sea Slug
- Pelican Eel
- Pelican Gulper Eel
- Pelican Sole
- Penguin Fish
- Pennant Coralfish
- Pennant Glider
- Pennantfish
- Peppermint Shrimp
- Periwinkle Snail
- Peters’ Stargazer
- Peters’ White-Spotted Eagle Ray
- Pharaoh Cuttlefish
- Phantom Jellyfish
- Pheasant Shell Snail
- Pied Oystercatcher
- Pigeye Shark
- Pigfish
- Pike Conger
- Pike Eel
- Pink Abalone
- Pink Frogmouth
- Pink Lanternshark
- Pink Salmon
- Pink Sea Cucumber
- Pink Shrimp
- Pink-Spotted Shrimp Goby
- Pink-Tailed Triggerfish
- Pipefish
- Pistol Shrimp
- Plainfin Midshipman
- Plaice
- Plankton
- Platyfish (Brackish Water Species)
- Pleated Sea Squirt
- Pointed-Nose Skate
- Polar Cod
- Polar Sea Cucumber
- Polkadot Eel
- Polka-Dot Stingray
- Pomfret
- Porbeagle Shark
- Porcupine Crab
- Porcupine Pufferfish
- Port Jackson Shark
- Portuguese Man o’ War
- Posthorn Shrimp
- Prickly Dogfish
- Prickly Lanternshark
- Prickly Skate
- Princess Parrotfish
- Prowfish
- Pufferfish
- Puffadder Shyshark
- Purple Sea Star
- Purple Sea Urchin
