Another cow...Extreme Sexual Dimorphism. Task was to design a set of creatures, based on three briefs, that although the same species arevery different from each other. The one I chose was Collosal Aquatic Female and Tiny Airbourne Male. Other briefs were Rooted Stationary Male and Hyperactive Nomadic Female, and Crystalline Male and Gellatinous Female.



The male no larger than a seagull and the female being even more massive than a whale, at first were thought to be two completely different species. During their mating period it was thought that the males where feeding on the eggs layed by the female, rather than fertilizeing them. Until recent studies had confirmed they are in fact the same species.



Lesser Sea Gnat (male)

-Very small, doesn't grow larger than 1 foot in length.

-Lifespan is very short after reaching adulthood, about 5-7 days.

-Spends it's entire adulthood in the air using three pairs of wings to hover above the water.

-It's head and thorax are proportionately large compared to the female, and it's abdomen is fairly small.

-They are born mouthless thus being unable to feed, making their lifespans very short in comparison to the female.

-During the mating season the males will locate a female, by sensing the pheromones in the air. They will then scoop up the eggs to fertilize. They will then return the eggs to the same isolated locale where they have hatched. The eggs will remain there until the next mating season, before hatching. The males will die shortly after.



Greater Mountainback (female)

-Immense in size, they can grow up to 150 feet long, largest on record is over 200 feet long, and weighed an estimated 300 tonnes.

-It is unknown how long they can live, but it is said they will live up to 1000 years or so.

-It's head and thoracic regions are relatively small, as opposed to it's abdomen which takes up almost two third's it's body's mass.

-Spends it's entire adulthood underwater, using it's large fin-like wings to navigate through the water.

-Unlike the males they are born with mouths and feed almost exclusively on plankton and other microbial organisms.

-Once every two years the female will lays millions of tiny eggs, which attract a swarm of males to fertilize.

-Unlike the males the female larvae will make their way to the sea where they will grow to an immense size. That is, if they survive predation. It is estimated less than 0.1% of the females born will survive up to adulthood.

-Their large egg sac, although extremely heavy is very buoyant allowing it to traverse through the ocean with ease, without sinking it to the sea floor.



Edit: made some tweaks to the composition and and some small changes to the designs, as well as added some fish and whatnot.