Sealife guideExplore the wonders of sea life

Last updated on 09/25/2025 at 11:32 PM
Explore the amazing biodiversity of sea life !
Explore the amazing biodiversity of sea life ! © | Dreamstime.com
Marine life is organized in the form of a tree, better known as a phylogenetic tree, where each branch, called a phylum, groups together marine species that share common characteristics.
An ocean sample with its marine fauna and flora
The main phyla of marine life we will explore are:
In turn, the phyla are divided into classes and families.
The different phyla are arranged from the least to the most evolved, meaning that phyla containing the least evolved marine species are represented by the lower branches of the tree, while those containing the most evolved are found at the higher branches.
Consequently, the higher we climb in the branches of the marine life tree, the more evolved the species become.
Marine plants represented by a Posidonia seagrass meadow
Marine plants represented by a Posidonia seagrass meadow
The spiny lobster, an arthropod of the crustacean class
The spiny lobster, an arthropod of the crustacean class
The large sponge family with the yellow tube sponge !
The large sponge family with the yellow tube sponge !
A school of barracudas in the Mediterranean sea
A school of barracudas in the Mediterranean sea
If you're looking for information on a specific alga, sponge, shellfish, crab, sea star, sea urchin, sea anemone or fish, we invite you to explore the full range of marine flora and fauna in our marine life guide !
Latest marine life updates
Explore the latest marine life news, from fascinating flora and fauna to underwater photo exhibitions, contests and festivals. Follow scientific expeditions, browse our identification guides and dive into must-read books.

Our latestUpdates

The reticulated sandperch
Thursday, September 10th 2026
The reticulated sandperch
Discover the reticulated sandperch (Parapercis tetracantha), a small Indo-Pacific fish known for its elongated body and distinctive brown and white pattern.
The wedgetail triggerfish
Monday, September 7th 2026
The wedgetail triggerfish
Discover the wedgetail triggerfish, Hawaii's famous state fish. Learn about its vibrant colors, coral reef habitat, unique behavior, and cultural significance in Hawaii.
The Kemp's ridley sea turtle
Saturday, September 5th 2026
The Kemp's ridley sea turtle
The Kemp's ridley sea turtle is the smallest of the seven species of sea turtles and one of the most endangered. Discover this fascinating species, its unique biological characteristics, and its remarkable mass nesting behavior known as an arribada, when thousands of females gather on beaches to lay their eggs.
Photo of the Day
Mérou céleste (Cephalopholis argus)
Mérou céleste
(Cephalopholis argus)
Site déposé Copyright © 2007-2026 auxBulles.com - All rights reserved. Legal notices.
Photo credits - Our partners