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Identify This Plankton!

Images Identified:
1
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3
4
5
Question 1
Does it have eyes?
Unknown plankton image to identify.
Tree Identification Key
No eyes
Has eyes
A/B Identification Key
1
Has eyes
Go to 2
No eyes
Go to 3
2
Has legs
Go to 4
No legs
Go to 5
3
Has tentacles
Jellyfish
No tentacles
Go to 6
4
Body is worm-like
Bristle Worm (Polychaete)
Body not worm-like
Go to 7
5
Has tentacles
Squid Larva
No tentacles
Go to 8
6
Has wings
Sea Butterfly (Thecosomata)
No wings
Go to 9
7
Single spine on back of head
Crab Larva (Zoea Stage)
No single spine on back of head
Go to 10
8
Body is inside an egg
Fish Egg
Body is not inside an egg
Fish Larva
9
Body is see-through
Go to 11
Body is not see-through
Coral Larva
10
Single, central eye
Copepod
No single, central eye
Krill (Euphausiid)
11
Has cilia
Comb Jelly (Ctenophore)
No cilia
Salp