Some useful informative links:

• Virtual Tour of Chek Jawa
• Wild Singapore
• EART-H - Joseph Lai's website with guide sheets on native flora, insects, and many more written works on nature.
• Insects @ EART-H - Webpage with arthropod/insects found in Singapore.
• Raffles Museum of Biodiversity Research
• Ecology Asia
• Singapore Zoological Garden's volunteers' website
• Naturia
• Nature Society of Singapore
• A Guide to Mangroves of Singapore
• A Guide to Common Spiders of Singapore
• Mangrove and Wetland Wildlife in Sungei Buloh Wetlands Reserve
• Sungei Buloh Wetland Reserve
• Butterflies of Singapore
• Frogs of Singapore
• Nature's Niche - Bookstore in Singapore Botanics Garden
• Flying Squirrel Central
• Nature Photography Ethics