Common name: flesh sponge

General information

Oscarella lobularis, commonly known as the Lobular Bumpy Sponge, is a species of sponge found in the Mediterranean Sea. It is known for its soft, gelatinous texture and lobular, often bumpy appearance. Unlike many other sponges, O. lobularis does not possess a mineral skeleton, which contributes to its unique consistency. This sponge is a filter feeder, drawing in water to extract nutrients and oxygen.

Care

In the aquarium, O. lobularis requires a specific set of conditions to thrive. It needs a moderate to strong water flow to facilitate its filter-feeding behavior and the removal of waste products. Good water quality with low nitrate and phosphate levels is essential. Lighting is not a critical factor for this sponge, as it does not host photosynthetic symbionts like some other sponge species.

Reproduction

Oscarella lobularis reproduces both sexually and asexually. Sexual reproduction involves the release of gametes into the water column, while asexual reproduction occurs through budding. In the aquarium, asexual reproduction is more commonly observed, with new sponges forming from fragments of the parent.

Habitat

This sponge is typically found in shaded or semi-shaded areas, often in caves or under overhangs in the Mediterranean Sea. It can be found at various depths, usually not exceeding 40 meters. Hobbyists should replicate these conditions by providing shaded areas within the aquarium to mimic its natural habitat.