The Sharky tea infuser by Argentinian designer Pablo Matteoda.

In the designers own words:
INFUSION means to extract certain properties from an soluble ingredient such as tea leaves , herbs or fruit by soaking in liquid (water) until it gets saturated. So we can say that a infuser is the in charged of make this happen. This is a ludic point of view about the color given off from the phenomenon, wich makes more interesting the waiting of the whole process.