Though it was first discovered in 1939, little is known about this unusual fish because we’ve only recently developed the technology to bring the delicate deep sea animals to the surface for study. It has a thick body, a tiny, pouty mouth, and oddest of all, a clear, liquid-filled dome on its head that contains its tube-shaped, upward-gazing eyes. The barreleye fish, a member of the clade Protacanthopterygii (PROH-tuh-kan-THOP-tuh-RIJ-ee-eye), looks like nothing you’ve ever seen - unless, of course, you’ve seen a barreleye fish. In the ocean’s ‘twilight (i.e., mesopelagic) zone’ - depths of 600 to 800 meters where little light penetrates - lives a peculiar creature. The barreleye had been known for 50 years, but no one knew about its amazing adaptations until Monterey Bay Aquarium Research Institute (MBARI) researchers videotaped the animal alive, in its native habitat, using a robotic subersible. Information on controversies in the public arena relating to evolution.Alignment with the Next Generation Science Standards.The big issues – Pacing, diversity, complexity, and trends. Macroevolution – Evolution above the species level.Microevolution – Evolution within a population.Mechanisms: the processes of evolution – Selection, mutation, migration, and more.The history of life: looking at the patterns – Change over time and shared ancestors.An introduction to evolution: what is evolution and how does it work?.
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