Stone Crab
Females can lay up to a million eggs in one sitting
Ocean
Reef Shark
Grey reef sharks can give birth without males
Lion’s Mane Jellyfish
Though it’s a huge animal, the lifespan of the lion’s mane jellyfish is only a year.
Squirrelfish
Uses vibrations to communicate with other fish
Zebra Mussels
A female zebra mussel can deposit 30,000 to 1,000,000 eggs each year!
Hardhead Catfish
The hardhead catfish has a sharp spine near its fin to inject venom
Oyster Toadfish
The oyster toadfish can produce poison to protect itself
Sea Eagle
The sea eagle tends to mate for life with a single partner
Seagull
Some gulls are capable of using tools
Blanket Octopus
Females can weigh up to 40,000 times more than their partners.
Telescope Fish
Swallows food, much of it larger than them, whole
Nudibranch
They get toxins from their prey to use it against predators.
Boxfish
Can release a toxin from its skin
Grouper
Many grouper can change their sex, and it is always from female to male.
Freshwater Eel
Freshwater eels are actually catadromous, meaning they migrate to saltwater to spawn
Keta Salmon
During spawning the look of the male changes. Among other things, he grows a beak called a kype that bears fangs.
Parrotfish
The parrotfish can change from female to male at some point in its life.
Moon Jellyfish
Moon Jellies are bioluminescent, so they glow in the dark! They can also de-age!