毬

Japanese snowball

Reeve's spirea (Spiraea cantoniensis)

Viburnum plicatum var. plicatum

temaribana

traditional Japanese handball game

dakyū

playing catch

Japanese pinecone fish (Monocentris japonica)

Pronodularia japanensis (species of freshwater mussel)

chestnut in its burr

burr (e.g. chestnut)

Paralomis histrix (species of king crab)

marimo (variety of algae, Cladophora aegagropila)