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The white pelican scoops up prey while swimming along the surface. Brown
pelicans hurl themselves from the air into the water to scoop prey with their
enormous beaks. Although they seem ungainly, they are streamlined and
efficient during ...
The animals may beach when they are ill and unable to continue swimming, they
may be responding to the alarm calls of ill members of their pod, or they may be
disoriented by an internal parasite or an unusual magnetism interfering with their
These animals reproduce by forming reproductive polyps called gonozooids
which will break away and swim freely as medusas (mouth and tentacles face
downward). The medusas when mature will release egg and sperm, which will ...
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I purchased all three books in this set and taught a short course to a small group of high school kids. We had a great time with this course! We did 10 experiments and held very intense all-day ... Read full review