Gallery: Inside the Gorgeous and Mysterious World of Plankton
Christian Sardet01111 credit Christian Sardet
The potentially immortal jellyfish can reverse its development, transitioning from an adult back to a polyp.
Sharif Mirshak, Parafilms02145 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 Sardet03181 credit Christian Sardet
Nudibranchs typically stick to the sea floor, but this little juvenile joins the plankton
Sharif Mirshak04178 credit Sharif Mirshak, Parafilms, Montreal
A baby squid
Christian Sardet05169 credit Christian Sardet
Shelled mollusks known as pteropods
Christian Sardet06041 credit Christian Sardet
A swarm of unicellular protists
Christian Sardet0744 credit Christian Sardet
The unicellular algae *Phaeocystis globosa*
Christian Sardet0859 credit Christian Sardet and Noe Sardet
Solitary diatoms
Christian Sardet0981 credit Christian Sardet
A swarm of radiolarians, plus a cross-shaped acantharian
Christian Sardet10087 credit John Dolan, CNRS , Observatoire Océanologique de Villefranche-sur-Mer
Tintinnids
Christian Sardet11105 credit Christian Sardet
A female jellyfish with pink gonads
Christian Sardet12121credit Christian Sardet
A siphonophore
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A whole mess of creatures, including crab larvae, copepods, and shrimp larvae
Christian Sardet14141 credit Christian Sardet and Noe Sardet
Shrimp larvae
