Beneath the ocean surface, in cold and nutrient-rich waters, lie true underwater forests formed by giant algae known as kelp.
These impressive ecosystems can grow at an astonishing rate of up to 45 centimeters a day in optimal conditions, reaching heights of up to 60 meters from the sea floor, comparable to a 20-story building.
Kelp is not a plant in the traditional sense, but a type of brown algae belonging to the order Laminariales. Unlike land plants, it does not have true roots, but rather structures called haptera that anchor it to the rocky substrate. They also do not have leaves or stems like land plants, but analogous structures called blades and stipes.
These underwater forests are vital for ocean health, as they act as powerful carbon sinks, absorbing large amounts of atmospheric CO₂. Additionally, they provide habitat and shelter for thousands of marine species, from small invertebrates to fish, marine mammals, and birds that feed in these ecosystems.
Unfortunately, kelp forests are threatened globally by climate change, pollution, and overfishing. Rising water temperatures and extreme weather events like marine heatwaves have caused dramatic declines in some regions. Scientists are actively working on conservation and restoration programs to protect these valuable ecosystems before it is too late.
Source: Oceanographic Magazine
