This 301 piece wooden jigsaw puzzle is an 1899 illustration of Sea Squirts by German naturalist Haeckel. Sea squirts are a class of sea creatures a bit like barnacles, but more colorful in every way, and difficult to raise in captivity, so most people never get to see one (see wikipedia for more information). This puzzle has unique pieces reminiscent of the geometric forms of sea squirts and other such sealife, designed by Seattle artist Maria Berg. Like all our puzzles, made of 1/4" wood in the USA. Packaged in a pine wood box.