14/10/2026
🗑️ One person's rubbish is another fish's treasure 🐟
In the open sea, floating objects like driftwood or human garbage can become colonised by a whole community of fish!
This is a natural behaviour, with smaller fish closer, and larger predatory fish in "outer orbits" 💫
We observed this in the Alborán sea recently, with juvenile Mahi mahi circling this wooden chair, which in turn was a home to a variety of small fish and benthic creatures.
This effect is important to the open sea's creatures. Many times however, we are compelled to remove objects, especially if they are dangerous such as plastic ghost gear, or pose a risk to boaters.
When objects are colonised in this manner, they are called "Fish Aggregating Devices" (FADs). They can be natural, but fisheries also use artificial FADs to catch species such as tunas.
Let us know if you found this information interesting. We will keep monitoring the open sea, getting closer to the living surface of our planet, and reporting back what we encounter ⛵