What is in this image? Describe it as if you were explaining it to someone from the 15th century.

Think of a fantastical creature, akin to tales of dragons and sea monsters that you might hear whispered about in your time. The creature in this image bears the joyful and benign appearance of a small dragon, yet it combines elements of both land and sea creatures. Its body is long and undulating, similar to a serpent of the seas, covered with what appears to be scales. It possesses forelimbs akin to that of mythical beasts or dragons, with a hint of delicate webbing, hinting at its ability to possibly swim.Its head is crowned with a ridge that resembles the fanciful spines you might imagine on a dragon, yet its expression is gentle and benevolent, not fierce. It sports a wide, cheeky grin, and its eyes gleam with a friendly spark. The tail is long, with a fin-like end, perhaps indicating its prowess in water.Overall, imagine a creature from your fantastical stories, benign enough to be a companion to a noble knight or a mysterious entity in the tales told by the sea. This creature, however, is rendered in a simple, bold outline, as if crafted by a scribe using only ink and parchment, lacking any colour yet suggestive of a playful temperament fit for tales of wonder and delight.