PICTURES

empties so that the fish can surface and dive easily ||
 * [[image:http://elite-skill.tripod.com/sitebuildercontent/sitebuilderpictures/34-13-rayfinfishanatomy-l.jpg width="405" height="204"]] || [[image:https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcSvKvX359915ASJXbiIXiiP_1ijNQyYWlEZI5u2hpj9gKOkPKTy caption="Bony fish have a swim bladder which fills with air to control buoyancy (flotabilidad)"]] ||
 * [|SEA HORSE GIVING BIRTH TO 1000 BABIES] || Swim bladder is a sac of gas which fills or
 * [[image:http://3.bp.blogspot.com/_EdiSPJX1jg8/SZtO1S2o-TI/AAAAAAAABlM/pIHiEIf1XAQ/s400/anfioxo.jpg]] || [[image:http://upload.wikimedia.org/wikipedia/commons/4/47/Branchiostoma_lanceolatum.jpg width="406" height="319"]] ||
 * [[image:http://www.flmnh.ufl.edu/fish/education/questions/lateralline.jpg width="372" height="160"]] || [[image:http://www.bio.miami.edu/~cmallery/150/neuro/c7.49.12.lateral.line.jpg width="600" height="244" caption="Lateral line is a sensory organ that detects vibrations from the water."]] ||