Sealife guideThe Ulvaceae familyThe taxonomy of marine species
Explore the taxonomy of the sea plants and especially the algae and kelps !

The kelps

The sargassum

Sea lettuce
(Ulva lactuca)
(Ulva lactuca)
Our latestUpdates

Monday, August 11th 2025
The banded sea snake
The coloration of the banded sea snake, also known as the yellow-lipped sea snake, is distinctive with alternating black bands and bluish to grayish areas. The tip of its head, limited to its upper lip, is yellowish.

Thursday, August 7th 2025
The princess parrotfish
The princess parrotfish stands out with a coloration fit for a princess, featuring a dominant bluish hue, with yellow along the central part of its body near the pelvic fins, transitioning into green. Two blue bands run across its head on either side of its eyes.

Monday, August 4th 2025
The batwing coral crab
Discover the batwing coral crab, an iconic species of Caribbean coral reefs, recognizable by its smooth red shell speckled with white and cream.
Photo of the Day

Crabe vert
(Carcinus maenas)
(Carcinus maenas)