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More in Aquatic
Fish Spinal Cord: Anatomy, Function, and Regeneration
The fish spinal cord’s capacity for self-repair and its role in driving locomotion provide a key model for understanding neural control and recovery.
What Is Gigantocypris? The Giant Deep-Sea Ostracod
Explore the biology of Gigantocypris, a deep-sea crustacean whose specialized anatomy allows it to navigate and hunt in the near-total darkness of the abyss.
What Is a Squid’s Prey and How Do They Hunt?
Discover how a squid’s advanced anatomy and behaviors make it an effective marine predator, shaping its diet and its crucial role within the ocean’s food web.
Do Goldfish Have Brains and How Do They Work?
Go beyond the 3-second memory myth to understand the goldfish brain. Explore how its unique structure enables learning, perception, and long-term recall.
What Is an Adipose Fin and What Is Its Purpose?
Once considered a vestigial remnant, the adipose fin is now understood as a sensory tool that helps fish like salmon and catfish navigate water currents.
What Were the Dominant Cretaceous Fish?
Explore the fish that swam in warm Cretaceous seas, their place within a dangerous food web, and how a global extinction event shaped modern marine life.
How to Tell if a Sea Urchin is Dead and What It Means
A dead sea urchin is more than an empty shell. Explore the signs of life and loss, and what their condition reveals about the surrounding marine environment.
Do Oysters Have Blood and a Circulatory System?
Oysters circulate a clear, copper-based fluid, not red blood. Discover how this unique hemolymph and an open circulatory system work to sustain them.
Osedax Worms: The Bone-Eating Worms of the Deep Sea
Explore the biology of Osedax, a deep-sea worm that relies on symbiosis to consume bone and a distinct life cycle to colonize whale skeletons.
What Makes the Coelacanth’s Skeleton So Unique?
The coelacanth’s skeleton offers key insights into vertebrate evolution. Its primitive structure preserves anatomical traits from a pivotal point in history.
The Fish Gut: Anatomy, Microbiome, and Environmental Role
Explore the fish digestive tract, a dynamic system where diet shapes anatomy and internal biology reveals the health of its surrounding aquatic environment.
How Fish Movement Works: From Swimming to Schooling
Explore the principles of aquatic locomotion, from the core mechanics of an individual fish to the diverse strategies used for navigating their environment.
Evolution of Sharks: From Ancient Origins to Modern Predators
Explore the 400-million-year history of sharks, examining the evolutionary innovations and adaptations that allowed them to persist and diversify through the ages.
What Is Sutchi Catfish? A Look at Swai and Pangasius
An objective look at the affordable whitefish sold as sutchi, swai, or pangasius. Understand its true identity, culinary uses, and production background.