The [[Soma cube]] is a [[mathematical game|mathematical puzzle]] by [[Piet Hein]].
The '''blue whale''' (''Balaenoptera musculus'') belongs to the baleen [[whale | whales]] suborder. It is the largest living animal, and the largest [[mammal]] ever to have lived on Earth. It was described by [[Linnaeus]] in 1758.
It is a filter-feeder, using its baleen to strain plankton out of the seawater and may reach 30 meters long and 150 tons.