A
* Abalone: A type of edible marine snail
* Anemone: A colorful, flower-like creature that lives in shallow waters
* Angelfish: A vibrant, tropical fish known for its elegant shape
* Anthozoa: A class of marine invertebrates, including corals, sea anemones, and sea pens
B
* Barnacle: A small, crustacean that attaches itself to surfaces
* Blue whale: The largest animal on Earth
* Bioluminescent algae: Algae that produce light
C
* Coral: A marine invertebrate that forms colonies of tiny animals called polyps
* Crab: A decapod crustacean with a broad, flattened carapace
* Clownfish: A colorful fish that lives in anemones
* Cuttlefish: A cephalopod with a unique ability to change color and texture
D
* Dolphin: A toothed whale known for its intelligence and social behavior
* Dungeness crab: A species of crab found along the Pacific coast of North America
E
* Echinoderm: A marine invertebrate with a spiny skin, including starfish, sea urchins, and sea cucumbers
* Eel: A snake-like fish with a long, slender body
F
* Fanworm: A marine worm with a fan-shaped crown of tentacles
* Fish: A diverse group of aquatic vertebrates with gills
G
* Giant clam: A large bivalve mollusk that can grow to over a meter in length
* Goby: A small, bottom-dwelling fish
H
* Hammerhead shark: A shark with a distinctive head shape
* Humpback whale: A baleen whale known for its long pectoral fins
I
* Isopod: A type of crustacean with a flattened body
* Iguana: A reptile that lives on the Galapagos Islands and feeds on seaweed
J
* Jellyfish: A gelatinous marine animal with tentacles
K
* Kelp: A type of brown algae that grows in long, stringy strands
* King crab: A large, edible crab
L
* Lobster: A large, decapod crustacean with long, segmented antennae
* Lionfish: A venomous fish with distinctive spines
M
* Manatee: A large, herbivorous marine mammal
* Manta ray: A large, filter-feeding ray with wing-like fins
N
* Nudibranch: A colorful, shell-less sea slug
O
* Octopus: A cephalopod with eight arms and remarkable intelligence
* Oyster: A bivalve mollusk that produces pearls
P
* Plankton: Tiny organisms that drift in the water, including phytoplankton and zooplankton
* Portuguese man-of-war: A colonial marine animal with a long, venomous tentacle
Q
* Queen conch: A large, edible marine snail
R
* Ray: A cartilaginous fish with flattened bodies and wing-like fins
* Reef fish: A fish that lives in coral reefs
S
* Sea cucumber: A marine invertebrate with a soft, leathery body
* Sea star: A five-armed echinoderm
* Sea turtle: A large, marine reptile
* Seahorse: A small, bony fish with a horse-like head
* Seaweed: A type of algae that grows in the ocean
T
* Tuna: A large, predatory fish
* Tunicate: A marine invertebrate with a sac-like body
U
* Urchin: A spiny, globular echinoderm
V
* Vole: A small rodent that lives in the Arctic
* Venus flytrap: A carnivorous plant that traps insects
W
* Whale shark: The largest fish in the world
* Whale: A large, marine mammal
X
* Xanthid crab: A type of crab that lives in shallow waters
Y
* Yellowtail: A type of fish with a yellow tail fin
Z
* Zebra mussel: A small, invasive bivalve mollusk
This list includes just a few examples, and there are many other marine animals and plants that begin with each letter.
