On-Line Jigsaw Puzzles

This puzzle has 48 pieces in classic puzzle piece shapes.  However, it can be adapted from 6 to 247 pieces with a variety of types of puzzle pieces. To do this, click on the shapes button and choose the type of shapes and number of pieces.

Black- tip reef shark
Source: from wikicommons - photographer  Luc Viatour

December 7th is when the Blue Marble photo of the earth was taken, 1972.