Contrary to what many of us would predict most female animals are not monogamous. Not even swans or penguins, those (supposedly) hallmarks of monogamy. Also surprising is the evidence that in most cases the female deliberately looks for the multiple sexual partners since female multiple mating (known as polyandry) is costly, risky and seems to bring no benefits to the females involved.
The largest fish species in the ocean, the whale shark, is spectacular for lots of reasons, not the least is that their motion is an astonishing feat of mathematics and energy conservation

In new research,  marine scientists reveal how these massive sharks use geometry to enhance their natural negative buoyancy and stay afloat.

For most animals movement is crucial for survival, both for finding food and for evading predators. However, movement costs substantial amounts of energy and while this is true of land based animals it is even more complex for birds and marine animals which travel in three dimensions. Unsurprisingly this has a profound impact on their movement patterns.