Names are similar, life structures are different
The word "seaweed" is frequently used in daily language for the green images on the seabed. However, seagrasses are flowering plants with true roots/rhizomes, leaves and reproductive structures. Algae (seaweeds) constitute other biological groups. Posidonia oceanica in the Mediterranean is a very good example to explain this distinction.
How to distinguish?
Long, meadow-looking leaves in an underwater photo suggest the plant may be seagrass; However, it is not always possible to determine the species just by looking at the photo. Location and depth information, expert diagnosis, and sometimes additional morphological details may be required.
Why is it important?
Seagrass meadows create habitat, can retain sediment and contribute to the carbon cycle. Posidonia leaves washed ashore are also related to the natural cycle of the ecosystem; It doesn't always mean "dirty beach."
while diving
It is a good habit for the health of the ecosystem not to step on the seagrass, not to pull the plant, and not to disperse the living creatures in the environment. Deep Dive's photo archive will use “algae/seagrass” tags consistently once species identification is confirmed.
Discover more at Çandarlı
You can review Derin Dalış Merkezi's atlas of diving spots and get information about your questions from the contact page. Historical sources are not evidence of current diving feasibility.
Sources
- UNEP: https://www.unep.org/resources/report/out-blue-value-seagrasses-environment-and-people
- IUCN: https://iucn.org/story/202509/why-blue-carbon-ecosystems-matter-mediterranean
This article is for general information; It is not a substitute for personal dive training, medical opinion, sea conditions or operational plan.