The study of organisms that dwell in the ocean or brackish waters.

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Effect of extremely hard water on marine life?

When researching water quality standards, I found that a minimum and maximum was set for water hardness. Several sources also state that water can in fact be too hard. The question is how does hard ...
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Best tail for swimming?

I understand that the vertical tails of fish and the horizontal flukes of cetaceans evolved due to the spinal movements of their ancestors but I was just wondering which was the most efficient for ...
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What do sharks not like the smell of?

I was reading about the sharks strong sense of smell ( Shark senses - @EnhancedLearning.com ) and wondered if any research has been done into what they don't like the smell of? Is there any material ...
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Where should one start if they want to go about identifying phytoplankton and dinoflagellates?

I'm a first year university student and I really need help on how to identify and recognize the different organisms observed in my water samples. Are there any good references/tips on how to?
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236 views

Neuston vs pleuston

I was recently reading about the wonderful chondrophores, and came across the terms "neuston" and "pleuston". According to Wikipedia, "neuston" are "the organisms that float on the top of water ... ...
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How do marine mammals and penguins maintain bone density?

After much searching on Google with no results, I decided to ask about my question here. If I'm not mistaken, swimmers' bone density is less than normal; at least for lifetime swimmers. Astronauts ...
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marine animal tracking databases

Which databases you know that store data on tracking of marine animals? I am interested particularly on mammals (for which I know meop storing data on sea lions) but also on fish schools (not sure ...
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Does urchin metamorphosis involve two animals?

An urchin larva becomes an adult urchin through metamorphosis. This fascinating documentary about metamorphosis suggests that the urchin larva "dies", being partially eaten by the new individual, the ...
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Can immortality of the Turritopsis dohrnii be learned or adapted by other species?

I have heard that Turritopsis dohrnii is a species of jelly fish which is immortal, as it can grow old and then back to growing young. So, how is it possible? Can other species (marine and/or land) ...
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Do molluscs shells regenerate?

Does a molluscs, for example mussels, shell grow back? Because it will obviously be degraded with time, what with ocean acidification and such. But can the organism grow the shell back? If so, how ...