U is for Urchin

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u

is for urchin

red sea urchin

Pacific sand dollar

pea urchin

sea potato

long-spined sea urchin

purple sea urchin

There are lots of different types of sea urchins.

is for

underwater

All sea urchins live in the ocean.

sea otter

u

is for

ultra-spiky

Sharp spines protect sea urchins from predators.

is for

underneath Underneath an urchin’s spines is a hard shell, called a test.

u

is for unite

carrier crab

fire urchin

Some urchins and crabs team up to travel around the ocean.

is for

unusual Urchins walk using lots of strange tube feet.

u

is for

upside down A sea urchin’s mouth is hidden at the bottom of its shell.

is for

unstoppable

Urchins chomp all the seaweed they can find.

u

is for

urchin family feather star

brittle star

sea cucumber

starfish sea lily

Sea urchins are related to many other sea creatures.