These piles of dead leaves on our Mediterranean beaches… For many, they are seen as a mere nuisance. But make no mistake! The presence of Posidonia mats ( Posidonia oceanica ) is actually a sign of a healthy ecosystem. They play a crucial role in protecting against erosion and harbor an unsuspected biodiversity. It’s time to preserve […]
A threatened biodiversity hotspot The Antillean arc is considered a true biodiversity « hotspot » due to its significant endemism and variety of both terrestrial and marine species. Among these species, corals play a crucial role by forming ecosystems with recognized ecological functionalities. However, the survival of these fragile organisms is now highly jeopardized, not in the […]
The Moses sole, known scientifically as Pardachirus marmoratus, is a fascinating and unique fish. Contrary to some misconceptions, it is not a half fish, but rather a remarkable example of evolutionary adaptation to its environment. Where does this flat shape come from? Why and how did it evolve? Morphology and characteristics Also called milk sole, the Moses sole […]
Underwater Sand: An Unseen Living World It cannot be repeated enough: sandy bottoms are teeming with life. From majestic torpedo rays to enigmatic garden eels, passing through moon snails and heart urchins, the sand is never void of its inhabitants. Sometimes it even becomes a protagonist in its own right when the sand itself is… […]
In tide pools at low tide, in the company of sea anemones, crabs hide in unsuspected corners. If you pay attention, you will discover that there are nearly 7,000 species of crabs, animals as fascinating as they are complex. An overview of crabs Crabs belong to the phylum arthropods, which emerged about 1.8 million years […]
Less known than the Great Barrier Reef, the temperate waters of the Australian continent offer exceptional biodiversity and breathtaking underwater landscapes, where forests of golden kelp intertwine with multicolored sponge gardens. Welcome to the Great Southern Reef, home to one of the most elegant and rare marine creatures on our planet: the leafy seadragon. The […]
Since the release of the movie « Finding Nemo » in 2003, the clownfish has gained unprecedented fame, becoming one of the most coveted fish in the world. Divers exploring the waters of the Indo-Pacific can easily recognize this small fish with vibrant colors, usually orange with white stripes, which takes refuge in sea anemones. It is […]
Marine life is a constant challenge: extreme temperatures, salty or fresh water, drought… Marine organisms have developed astonishing adaptations to survive in ever-changing environments. The challenges of the marine environment The marine environment imposes numerous constraints: temperature, salinity, currents, light, pressure. To reproduce, feed, and move, organisms must adapt to this complex set. They have […]
The « sea angels, » belonging to the Pomacanthidae family, are iconic fish of tropical seas. Although the majority of species are found in the Indo-Pacific basin, including the Red Sea and the Persian Gulf, some also inhabit the Atlantic Ocean, notably in the Caribbean Sea and the Gulf of Mexico. This family of fish dates back […]
Swimming, drifting, gliding with the currents… Marine animals move with ease in the water, which is 800 times denser than air. Whether it’s a fish, a crustacean, or a marine mammal, each develops its own adaptations to move around. The locomotion of marine animals The marine environment is a challenge for organisms living there. The […]
