Sargasso Sea Food Web
Marine
Western North Atlantic Ocean
Description
The Sargasso Sea is a unique open-ocean ecosystem defined by currents rather than coastlines, characterized by floating Sargassum seaweed mats. These mats create a floating habitat that supports juvenile sea turtles, endemic Sargassum fish, and a diverse invertebrate community. European and American eels migrate thousands of kilometers to spawn here.
Trophic Pyramid
Level 5
Decomposers
Pelagic bacteria
Marine fungi
Sargassum worms
3 species
Level 4
Tertiary Consumers
Mahi-mahi
Wahoo
White marlin
3 species
Level 3
Secondary Consumers
Sargassum fish
Juvenile sea turtles
Flying fish
3 species
Level 2
Primary Consumers
Sargassum shrimp
Copepods
Planula larvae
3 species
Level 1
Producers
Sargassum seaweed
Cyanobacteria
Prochlorococcus
3 species
Apex Predators
Tertiary Consumers
Secondary Consumers
Primary Consumers
Producers
Key Interactions
- Sargassum mats provide essential nursery habitat for juvenile loggerhead turtles
- European and American eels converge to spawn in the Sargasso Sea
- Sargassum fish are perfectly camouflaged ambush predators within the weed mats
- Deep nutrient mixing during winter storms fuels surface productivity