Blue whale: The largest animal ever known; eats tiny krill
Humpback whale: A whale famous for songs and breaching
Orca (killer whale): A large black and white dolphin that hunts in pods
Sperm whale: The largest toothed whale; dives very deep
Beluga whale: A small white whale of Arctic waters
Narwhal: A whale with a long spiral tusk
Dolphin: A smart, social marine mammal that uses echolocation
Porpoise: A small relative of dolphins with a blunt snout
Manatee: A gentle, slow marine mammal that eats plants
Sea otter: A mammal that floats on its back and uses tools to crack shells
Walrus: A large Arctic mammal with tusks
Seal: A marine mammal with flippers and no external ear flaps in true seals
Sea lion: A marine mammal with ear flaps and large front flippers
Polar bear: An Arctic marine mammal that hunts on sea ice
Great white shark: A large predator shark
Whale shark: The largest fish; eats plankton
Hammerhead shark: A shark with a wide, flat head
Manta ray: A giant, wing-like filter feeder
Stingray: A flat fish with a stinging barb on its tail
Clownfish: An orange and white fish that lives among anemones
Seahorse: A fish where the male carries the babies
Pufferfish: A fish that swells with water when threatened
Swordfish: A fast fish with a long flat bill
Tuna: A fast, strong fish important for food
Salmon: A fish that swims from the sea up rivers to spawn
Eel: A long, snake-like fish
Anglerfish: A deep-sea fish with a glowing lure
Flying fish: A fish that glides above the water
Jellyfish: A soft sea animal with stinging tentacles, no brain or heart
Octopus: A smart mollusk with eight arms
Squid: A mollusk with eight arms and two long tentacles
Giant squid: A deep-sea squid with the largest eyes in the animal world
Cuttlefish: A relative of squid that changes color quickly
Nautilus: A shelled cephalopod with a spiral shell
Starfish (sea star): A spiny-skinned animal with arms
Sea urchin: A spiny round animal
Sea cucumber: A soft, sausage-shaped animal on the seafloor
Crab: A crustacean with claws and a hard shell
Lobster: A large crustacean with big claws
Shrimp: A small crustacean with a curved body
Krill: Tiny shrimp-like animals eaten by whales
Barnacle: A crustacean that sticks to rocks and boats
Hermit crab: A crab that lives inside a borrowed shell
Sea turtle: A reptile that lives in the ocean and lays eggs on beaches
Sea snake: A venomous snake adapted to the sea
Marine iguana: A lizard that feeds on algae in the sea, found in the Galapagos
Penguin: A flightless bird that swims
Albatross: A seabird with a very long wingspan
Pelican: A seabird with a throat pouch
Coral: A tiny animal that builds a hard skeleton, forming reefs
Sponge: A simple animal that filters water
Sea anemone: A soft animal with stinging tentacles
Seaweed: Algae that grows in the sea
Kelp: A large brown seaweed that forms forests
Plankton: Tiny living things that drift in the sea
Mollusk examples: Clams, snails, oysters and octopuses
Great Barrier Reef: The world's largest coral reef system, off Australia
Bioluminescence: Light made by living things, as in jellyfish and anglerfish
Pod: A group of whales or dolphins
School: A group of fish
Baleen: Plates in some whales' mouths that filter food
Blowhole: The nostril on top of a whale's head
Echolocation: Using sound echoes to find prey
Gills: Organs fish use to get oxygen from water
Fins: Body parts that help fish steer and balance
Ink: A dark fluid octopuses squirt to hide
Tide pool: A pocket of water left behind on a rocky shore at low tide
Intertidal zone: The shore area between high and low tide
Deep sea: The dark, cold part of the ocean far below the surface
Mariana Trench: The deepest place in the ocean
Food chain in the sea: Phytoplankton, zooplankton, small fish, larger fish and sharks or whales
Overfishing: Catching fish faster than they can reproduce

Free flashcards from Peabody at peabody.kids/flashcards/ocean-life