Common name: Sailor's Eyeball

General information

Ventricaria ventricosa, commonly known as Sailor's Eyeball or Bubble Algae, is a single-celled green alga that is spherical in shape and can grow up to 5 centimeters in diameter. It is one of the largest single-celled organisms and is easily recognizable in the marine environment due to its unique appearance. Despite being a single cell, it has a complex structure with a tough outer layer that can withstand significant pressure.

Care

In the aquarium, Ventricaria ventricosa can be both a fascinating addition and a nuisance. It requires moderate lighting and can grow on live rock or other hard substrates. While it can be aesthetically pleasing, it can also spread rapidly and may need to be manually removed if it becomes too invasive. It is important to handle bubble algae carefully, as breaking them can release spores and lead to further spread.

Symbiosis

While not known for any specific symbiotic relationships, Ventricaria ventricosa can play a role in the nutrient cycle of a reef tank by absorbing excess nutrients such as nitrates and phosphates, which can help in controlling algae blooms.

Habitat

Sailor's Eyeball is found in tropical and subtropical oceans worldwide. It typically attaches to hard substrates in shallow waters and can often be found in areas with strong water movement.