Penares sphaera, the crater sponge, is a deep sea demosponge from southern Africa.

This pale sponge has a thick encrusting growth form.

It ranges from white to pale peach to light grey.

[3] White ringed ostioles are scattered across the surface and may be more clustered in some parts.

[3] The following spicules make up the skeleton of this species:[2] Dichotriaenes and envelop the surface.