Assertion: sponge's pore | /r/Synonym | leaves
Facets:
Source sentences:
text: The canals have openings to the outside which are called pores, where the water enters the Sponge system these pores are usually small and are called 'Ostia' and where the water leaves the Sponge system the pores are larger, often singular and are called 'Oscula' (singular osculum).