Bloodworm

Pond or Polluted river

It has haemoglobin to help it absorb oxygen just like our blood cells.

Water Flea

Pond

Antennae flick down to stop it sinking.

Legs circulate water over its gills.

Butterfly Fish

Sea

Its markings help it escape predators.

Stonefly Nymph

Fast-flowing river

Flat body and claws help it cling to rocks.

Octopus

Sea

Eight tentacles with suckers grab food and rocks.

Perch

River

Fins help it move through water towards its prey.

Potamogeton

Pond

Flat leaves float on the surface to get light.

Water Crowfoot

Fast flowing river

Thin leaves let the water through without dragging them away.

Barnacles

Sea

Its shuts tight when the tide goes out.

It is glued to the rock so waves don’t pull it off.

Tapegrass

Fast flowing river

Long, thin leaves let the water flow past them.

Skater

Pond

Special hairs on its feet stop it from sinking through the surface.

Water Boatman

Pond

Legs act like oars to move it quickly to catch its prey.

Shark

Sea

Streamlined body means it moves fast to catch its prey.

Bladder Wrack

Sea

Air bladders help it float to get light.

Stalks are glued to rocks so waves don’t pull it off.