Sharkfolk Skeleton

I imagine they have a unique adaptation to living on land and in the sea, perhaps similar to amphibians: a hybrid skeleton of bone and cartilage. 🦴🦈🦴

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Similar to frogs, the Sharkfolk's life cycle would begin with a completely marine phase. When they are born, their bodies are predominantly cartilaginous, with underdeveloped arms and legs. As they grow, they undergo a process of ossification: the limbs become stronger, the spine straightens and the body adapts to terrestrial locomotion. In the sea, they swim in a serpentine movement, keeping their arms close to their body, similar to the marine lizards of the Galapagos.

I made this illustration to try to show what the skeleton would look like, I know it's not that “accurate” but I hope you like it! I chose a great white shark to get a better view, the other species work in the same way, with a few small differences, mainly in the shape of the skull.

Although they have adapted well to life on land, Sharkfolk still depend on a balance between the two environments. Spending too much time exclusively on land or at sea can cause physical changes, atrophy or even degenerative diseases. For this reason, their physical health requires a balanced routine of exercise, both aquatic (such as swimming and gill breathing) and terrestrial (such as walking and lung breathing).

Finally, Roberto, being a great hammerhead shark, would probably have one of the most "eccentric" skulls of the species hehe