The House and Garden Building, Tokyo. Designed by Japanese architect Ryue Nishizawa. The house has no facade and no interior walls. Instead there are floor-to-ceiling windows, curtains and an array of.
The aptly named Ping-pong tree sponge (Chondrocladia lampadiglobus) is a carnivorous sponge. Those ping-pong ball looking things are covered in tiny spicules which the sponge uses to catch tiny crustaceans.
Yes, this is an animal. The Spanish dancer (Hexabranchus sanguineus - meaning "blood-colored six-gills") is a dorid nudibranch (sea slug). I think it's great color and design inspiration for a crocheted afghan.