Jun 2, 2015 10:00 AM

Gallery: Inside the Gorgeous and Mysterious World of Plankton

Christian Sardet
01
111 credit Christian Sardet
The potentially immortal jellyfish can reverse its development, transitioning from an adult back to a polyp.
Sharif Mirshak, Parafilms
02
145 credit credit Sharif Mirshak, Parafilms, Montreal.
The incredible sapphirina copepod. Normally transparent, when light hits it the right way, [it flashes with brilliant color](https://www.youtube.com/watch?v=Ex39GYeLQFk).

Christian Sardet
03
181 credit Christian Sardet
Nudibranchs typically stick to the sea floor, but this little juvenile joins the plankton
Sharif Mirshak
04
178 credit Sharif Mirshak, Parafilms, Montreal
A baby squid

Christian Sardet
05
169 credit Christian Sardet
Shelled mollusks known as pteropods
Christian Sardet
06
041 credit Christian Sardet
A swarm of unicellular protists

Christian Sardet
07
44 credit Christian Sardet
The unicellular algae *Phaeocystis globosa*
Christian Sardet
08
59 credit Christian Sardet and Noe Sardet
Solitary diatoms

Christian Sardet
09
81 credit Christian Sardet
A swarm of radiolarians, plus a cross-shaped acantharian
Christian Sardet
10
087 credit John Dolan, CNRS , Observatoire Océanologique de Villefranche-sur-Mer
Tintinnids

Christian Sardet
11
105 credit Christian Sardet
A female jellyfish with pink gonads
Christian Sardet
12
121credit Christian Sardet
A siphonophore

Christian Sardet
13
027 credit Christian Sardet
A whole mess of creatures, including crab larvae, copepods, and shrimp larvae
Christian Sardet
14
141 credit Christian Sardet and Noe Sardet
Shrimp larvae

Christian Sardet
15
150 credit Christian Sardet
Panaeid shrimp larva
Christian Sardet
16
155 credit Christian Sardet
Phronima, a crustacean that attacks gelatinous animals like siphonophores and lives in their hollowed-out bodies.

Christian Sardet
17
173 credit Christian Sardet
Small mollusks known as heteropods
Christian Sardet
18
174 credit Christian Sardet
The “sea elephant”

Christian Sardet
19
186-187 credit Christian Sardet
They may not look it, but these chaetognaths are ferocious predators
Christian Sardet
20
202 credit Christian Sardet
A pyrosome, which is actually made up of hundreds of separate zooids

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