description Ventricaria ventricosa Overview
Ventricaria ventricosa is a species of green alga found in tropical and subtropical marine environments, particularly in coral reefs. Often referred to as bubble algae or sailor's eyeballs, it is recognized as one of the largest known single-celled organisms on Earth. The organism consists of a single large, spherical cell that can reach sizes up to 5 centimeters in diameter. It contains multiple nuclei and exhibits a shiny, dark green appearance when observed underwater.
help Ventricaria ventricosa FAQ
Is Ventricaria ventricosa really one cell?
Yes. Each bubble is a single giant cell containing multiple nuclei and a large central vacuole, rather than a colony of smaller cells. Individual bubbles can reach about 5 centimeters in diameter. [Source](https://ocean.si.edu/ocean-life/plants-algae/bubble-algae-ventricaria-ventricosa)
What is another name for Ventricaria ventricosa?
It is commonly called bubble algae, sea pearl, or sailor's eyeball. Many references also use the name Valonia ventricosa, while Ventricaria ventricosa remains a recognized taxonomic name. [Source](https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?lvl=0&mode=Undef&name=Ventricaria+ventricosa&srchmode=1)
Where does Ventricaria ventricosa grow?
This green alga lives in tropical and subtropical marine environments, especially reef crevices, hard substrate, and mangrove roots. It has a worldwide tropical distribution and belongs to the green-algae phylum Chlorophyta. [Source](https://ocean.si.edu/ocean-life/plants-algae/bubble-algae-ventricaria-ventricosa)
Is Ventricaria ventricosa a problem in saltwater aquariums?
Some reef aquarists treat it as nuisance bubble algae because it can spread across live rock and compete for space. Crushing a bubble can make removal worse, so aquarium keepers usually try to remove the entire bubble without bursting it. [Source](https://www.perryinstitute.org/sea-pearl-valonia-ventricosa/)
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