Dieterigyos are a clade of highly aquatic remipterosaurs commonly found in the warmer waters of Paradoxia, having specialized to such a degree that they now only return to shore when it is time to nest. The carnelian dieterigyo is one of many that inhabit the tropical belt of Paradoxia, particularly within the Panmezo Ring's Insulasia Ocean, where it is most abundant.
At a length of thirty five feet and weighing almost four tons, it is a modestly sized species for its genus. Like the rest of its cousins, it spends the majority of its life out in open water living in mixed-sex sibling pods. These pods are almost always clutch mates.
Intelligent as they are, they employ a vast majority of strategies when hunting for the fisks that make up the majority of their diet. Regardless of form, the capture is done the same way. A long, barbed, and stiff projectile tongue launches out of their jaws and skewers the fisk once they close the distance. The unfortunate fisk is then processed with their set of fearsome looking teeth.
The tall sail running down from the back of their head down to the base of the short tail is a collapsible structure that can be folded away during high speed swimming. When it is employed, it is in fitness displays. Both male and female dieterigyos bear this impressive structure and use it to gauge the viability of their partners.
A mass migration of female dieterigyos takes place on an annual basis, temporarily leaving their brothers and marching in the thousands for suitable nesting beaches. The decision to select which beach is a unanimous agreement by the most senior of mothers that have years of experience behind them.
A clutch could contain nearly two hundred eggs, each one miniscule in size compared to their mothers. These eggs are buried deep under warm sand and incubate inside for three and a half months. Once hatched, most will not survive the sprint to the seas. Those that do, however, have a reliably high chance of surviving under the mutual protection of their siblings, with the odds being a snowball series of benefits with the more clutch mates that survive.