Plakina nathaliae

{{Use dmy dates|date=October 2023}}

{{Short description|Species of sponge}}

{{Speciesbox

| taxon = Plakina nathaliae

| authority = (Ereskovsky, Lavrov & Willenz, 2014)

| synonyms = * Oscarella nathaliae Ereskovsky, Lavrov & Willenz, 2014

}}

Plakina nathaliae is a species of sea sponge in the order Homosclerophorida, first found in vertical walls of reef caves at depths of about {{convert|23|to|28|m|ft}} in the Caribbean Sea.{{cite journal|last1=Ereskovsky|first1=Alexander V.|last2=Lavrov|first2=Dennis V.|last3=Willenz|first3=Philippe|title=Five new species of Homoscleromorpha (Porifera) from the Caribbean Sea and re-description of Plakina jamaicensis|journal=Journal of the Marine Biological Association of the United Kingdom|volume=94|issue=2 |year=2013 |pages=285–307 |doi=10.1017/S0025315413000295|s2cid=84152037}} It has a leaf-like flat body, which is loosely attached to the substrate and a perforated, unlobate surface; it contains two bacterial {{Linktext|morphotype}}s and is characterized by two mesohylar cell types with inclusions.

In March 2017, the species was reassigned to Plakina Schulze, 1880.{{cite journal|first1=César|last1=Ruiz|first2=Guilherme|last2=Muricy|first3=Anaíra|last3=Lage|first4=Celso|last4=Domingos|first5=Sandrine|last5=Chenesseau|first6=Thierry|last6=Pérez|year=2017|title=Descriptions of new sponge species and genus, including aspiculate Plakinidae, overturn the Homoscleromorpha classification|journal=Zoological Journal of the Linnean Society|volume=179|issue=4|pages=707–724|doi=10.1111/zoj.12480|doi-broken-date=1 November 2024|url=https://academic.oup.com/zoolinnean/article/179/4/707/3076081}}