A look at many of the more than 22,000 species of fish, from freshwater, to the deep ocean, to the colorful coral reef. We look at the origin of fish, how they breathe, why they have scales, and how ...

Animals can be divided into groups. We call this 'classification'. Classification allows us to group animals together depending on their similarities and differences. Animals are divided into two main ...

Sharks are a remarkable, diverse group of ocean-dwellers that inhabit marine ecosystems all over the world. From the massive, gentle giant whale shark to the bioluminescent dwarf lantern shark, there ...

Planet earth is quite an amazing place, because it’f full of life. From creatures that are so small we can’t even see them, to creatures that are so huge they could squash a whole house. Each ...

Our courses cover the full breadth of biology, from molecular and cell biology, genetics, development, human physiology and pharmacology through to evolution, ecology, biodiversity conservation and ...

Nov. 2, 2025 UC Davis scientists uncovered Aptostichus ramirezae, a new trapdoor spider species living under California’s dunes. Genetic analysis revealed it was distinct from its close relative, ...