97% of animal species are invertebrates, meaning they lack backbones. Invertebrates can be found everywhere and have a variety of protective body coverings from exoskeletons to soft skin. They display an enormous diversity of forms including arthropods like insects and spiders, worms, jellyfish, corals, mollusks like snails and octopuses, and even sponges which are fixed in one place. Invertebrates make up the majority of animal life on Earth and play important roles in most ecosystems.

1. 97 % of the
animal
kingdom is
made up of
invertebrates.

2. Invertebrates are animals
that
do not have backbones.
They can be found
everywhere.
Some invertebrates have an
exoskeleton or a shell to
protect their bodies, but
some invertebrates just have
a soft body.

3. They have joined
legs.
They have
exoskeletons to
protect their body.
They have two or
more segments
(body parts).

5. Largest group of
arthropods.
3 pairs of legs.
3 main body part
sections.
2 pairs of eyes
2 antennae.
They have mouths.

6. Spiders, mites and
ticks.
4 pairs of legs
Their body is
divided into two
parts: head and
abdomen
Most live on land.
Some live in fresh
water.
They spin silk to
make traps for prey.
(spider web)
SPIDER
MITES
(ácaros)
TICKS
(garrapatas)

7. They have five
pairs of legs.
They live near or
on the ocean floor.
They live on land
and in water.
They have
antennae.

8. Many body segments.
They live under rocks & dark
places.
They have many legs.
They protect themselves by
curling up.
Millipedes have 4 legs on
each segment.
Centipedes have 2 legs on
each segment.
millipede
centipede

9. They look like plants but
they are animals.
Sponges stay fixed in
one place. They cannot
move.
They have no mouth,
stomachs, or other
organs
Most live in oceans
They stink a lot

10. They have tentacles
They have a mouth
Some are poisonous.
In warm water corals
can grow and even
make islands.
jellyfish
Sea anemone
coral

11. They have bodies with at least 5
sections
They have many feet feet to walk
along the ocean
They use tubes to catch food.

12. They can grow back
parts if they lose
them.
Some worms can
grow up to 30
METERS in length.
Earthworms have got
hairs to help them go
through the dirt!!!
Flatworm
Segmented
Roundworms

13. They live on land and
in fresh or salt water.
All molluscs have
soft muscular boides
Nearly all molluscs
have a shell.
Snails have a single
shell and a muscular
foot.
A clam has two
shells joined together.
squid
snail
Octopus
No shell
Snail – 1 shell
Clam – 2 shells
Internal shell