23
COPEPODS
Many animals spend their entire lives as
members of the zooplankton. They include
the tiny shrimp-like copepods, which form
dense swarms in many seas, providing
food for shoals of fish and giant
filter-feeding whales.
ARROW WORMS
These long, almost transparent animals
prey on the other creatures of the
zooplankton, including copepods.
They are named for the way
that they shoot forward
through the water to
catch their victims.
This delicate organism is
a larvacean – a drifting
animal that lives in a
bubble of soft mucus
This bristly creature is the
larva of a marine worm.
As an adult, it will live on
the bottom of the sea
The plankton is full of
drifting fish eggs that
will hatch into tiny
planktonic larvae
Planktonic copepods
have long antennae
that act like parachutes
to stop them sinking
Arrow worms are armed
with strong grasping
spines, which they use
to seize copepods
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