Category
page 1Bioluminescent animals

Pyrosoma atlanticum
species of chordates
Grantia
Grantia is a genus of calcareous sponges belonging to the family Grantiidae. Species of the genus Grantia contain spicules and spongin fibers.

Oikopleura dioica
species of chordates
Emplectonema kandai
species of worm
Oikopleura
Oikopleura is a genus of tunicates in the class Appendicularia (larvaceans). It forms a mucus house every four hours at 20 degrees Celsius. This house has a coarse mesh to keep out big particles, and a fine mesh that collects the small particles, down to the nanoplankton that includes (pelagic) bacteria.