Sea Squirt

Also called  ascidian  any member of the invertebrate class Ascidiacea (subphylum Urochordata, also called Tunicata), marine animals with some primitive vertebrate features. Sea squirts are fixed growing organisms resembling potatoes more than animals; they are found in all seas, from the intertidal zone to the greatest depths. All adult forms are sessile (permanently fixed to a surface).

Solar Cell

Any device that directly converts the energy in light into electrical energy through the process of photovoltaics.