Oysters, but very very rarely they are found in clams.
Pearls are produced by Oysters.
Eels. Eels do not typically have pectoral fins (general area of animalia arms), nor do they have pelvic fins (the general animalia area of legs). Dorsal and anal fins are typically fused along the back around the tail and over the belly with the caudal fin a a ribbon-like structure.
Some characteristics of sea animals include streamlined bodies for efficient swimming, gills for breathing underwater, and adaptations like fins or tentacles for locomotion. They often have a high tolerance for saltwater environments and may exhibit a wide range of shapes, sizes, and behaviors to survive in their marine habitats.
The animal that hides sparkling pearls is the oyster. Oysters produce pearls as a defense mechanism in response to an irritant, such as a grain of sand, that enters their shell. Over time, layers of nacre are deposited around the irritant, forming a pearl. Click the link below to get more views on Dogs and pets
Sea snakes have fins on their back to help them swim efficiently in water. These fins enhance their maneuverability and control while gliding through the ocean currents, making it easier for them to hunt for prey and evade predators.
The sea animal with the most eyes is the scallop, which has anywhere from 50 to 100 eyes along the edge of its shell. These eyes are simple in structure but are able to detect changes in light and movement to help the scallop avoid predators.
I do not know of any mammal (mammals are the only animals to have hair) that has fins (fins are the preserve of fishes), but a sea-lion is an animal that is covered in hair and has "flippers".
Oysters. Actually, clams and certain other molluscs can also produce pearls, but it's only oyster pearls that are of gem quality.
The pearls aren't in the Sea of Monsters. They are in the first book.
Bivalve crustaceans such as oysters have pearls.
The places to purchase South Sea pearls online are many and varied. A good place to start would be Pearl Paradise, Raw Pearls, Premium Pearls and Pearl Gallery.
Imitation pearls made from sea shells; very popular on Okinawa.
Eels. Eels do not typically have pectoral fins (general area of animalia arms), nor do they have pelvic fins (the general animalia area of legs). Dorsal and anal fins are typically fused along the back around the tail and over the belly with the caudal fin a a ribbon-like structure.
Oyster
clams
clams
oyster
No