Auburn University BIOLOGY 3040 Chapter 9 1)What animals are commonly found as nekton? Unlike plankton, nekton… Fish evolved for very high acceleration are very muscular and are much deeper from the dorsal to ventral axis than in the anterior to posterior axis – Very powerful fast swimming fish such as tuna have developed a very strong tail, which undulates primarily at the posterior end, compared to slower swimming fish

2. Unlike plankton, nekton…
3. Fish evolved for very high acceleration are very muscular and are much deeper from the dorsal to ventral axis than in the anterior to posterior axis –
4. Very powerful fast swimming fish such as tuna have developed a very strong tail, which undulates

primarily at the posterior end, compared to slower swimming fish. –

5. In order to maximize oxygen uptake from the water, fish use the same method turtles do to maintain their

heat: they use a counter current flow system. –

6. Fish use a counter current system to maintain oxygen in their body and to push oxygen rich gasses into their swim bladder –
7. What mechanisms do fish use to capture prey? –
8. Moray eel uses a specialized pharyngeal jaw that thrusts forward to capture prey. This jaw…
9. Lateral line systems are specialized for detecting…
10. Mesopelagic fish…
11. The odontoceti are marked by their…  
12. In the mysticetic there are…
13. The rorquals are known, by molecular analyses, to have undergone considerable introgression –
14. Small plankton may be able to reverse the flow of western boundary currents by virtue of their migratory patterns –
15. Sea otters are –
16. Do diving mammals have to be concerned with the bends? –
17. What is the name of the structure used by rorquals to feed? –