Sealife guideThe marine plants

Marine plants are not strictly a separate phylum in themselves. We will rather talk about the plant kingdom as opposed to the animal kingdom.

The marine plants

The plant kingdom

In fact, the plant kingdom represents all living organisms capable of producing their own organic matter through photosynthesis, thanks to the presence of chlorophyll.

The plant kingdom contains significantly fewer species, around 300,000, than the animal kingdom and when we limit ourselves to the underwater world, we find two main groups:

on one hand, the Thallophytes with marine algae. They are made up of a thallus and lack roots, stems and leaves.
on the other hand, the Cormophytes represented by the Phanerogams or marine flowering plants

Some marine plants to discover

Forkweed
(Dictyota dichotoma)

Giant kelp
(Macrocystis pyrifera)

Marine peacock's tail
(Padina pavonica)

Neptune grass
(Posidonia oceanica)

Purse codium
(Codium bursa)

Sea comb
(Plocamium cartilagineum)

Sea lettuce
(Ulva lactuca)

Umbrella weed
(Acetabularia acetabulum)

Our latestUpdates

Friday, January 30th 2026

The dugong

Discover the dugong, a gentle “sea cow” of tropical waters. Learn about its habitat, diet, reproduction, morphology, and the threats facing this unique marine mammal.

Friday, January 23rd 2026

Dolphins: ocean's smartest creatures

Discover dolphins, the ocean's geniuses: explore their intelligence, social behavior, sophisticated communication, species diversity and vital role in marine ecosystems.

Friday, January 9th 2026

Hvar island

Hvar, a jewel of the Adriatic, captivates with its turquoise waters, wild coves and fragrant lavender fields. Between medieval villages, lively ports, and lush hills, Hvar island offers the perfect mix of relaxation, culture and breathtaking landscapes. Ideal for sun, sea and authentic experiences.

Photo of the Day

Grande synascidie urne
(Didemnum molle)