Coral Reef
- Coral reefs are typically found at a depth less than 150 feet so that they are reachable by sunlight.
- Corals contain microscopic algae called zooxanthellae that provide the coral with food and give them their vibrant colors
- Coral grows on average about 1 mm to 4cm per year.
- Coral reefs cover less than 0.2% of our oceans but they contain 25% of the world's marine fish species!
Coral Reef
- Coral reefs are typically found at a depth less than 150 feet so that they are reachable by sunlight.
- Corals contain microscopic algae called zooxanthellae that provide the coral with food and give them their vibrant colors
- Coral grows on average about 1 mm to 4cm per year.
- Coral reefs cover less than 0.2% of our oceans but they contain 25% of the world's marine fish species!Up Next...
Learning, Connecting, and Birdwatching at the Belize Birding Festival
Guest post by Holbrook Ambassador Debbie JordanEarlier this month, I was honored to represent Holbrook as the keynote speaker at the fifth annual Belize Birding Festival. Way down in the southeast co
Photo of the Month: November 2025
Above: On the way to see baobab trees at sunset on the red dirt roads in the bush of Madagascar, we stopped as the young goat herders crossed directly in front of us, looking like majestic figures in the sunlit, dusty glow. It felt like the scene of a movie, and this photo captured the feeling of that moment perfectly.
eBird Trip Reports: South Africa
Want to know which species other Holbrook travelers have seen on their birding trips to South Africa? Check out these eBird trip reports shared by past groups to see their checklists and get an idea of what you might encounter on your own birding expedition.