Ramanathapuram: El Niño effect suspected as red sea sponges wash ashore

CHENNAI: Large quantities of red-coloured sea sponges have washed ashore along the Ramanathapuram coast, particularly between Pudumadam, Manangudi and Nochiurani near Uchipuli, raising concerns among local fishermen over possible changes in marine conditions.

According to a Daily Thanthi report, the sponges found along the coastline display different colours depending on how long they have remained on the shore.

While freshly washed-up specimens retain a light red hue, those exposed for longer periods have dried and turned white.

The unusual occurrence has prompted fishermen to seek an investigation by Forest Department officials to determine the reasons behind the phenomenon.

Red Sea sponges washed ashore

The waters surrounding the 21 islands in the Gulf of Mannar, off Ramanathapuram district, support a rich diversity of marine life.

The region is home to around 3,600 species, including dugongs, dolphins, seahorses, porpoises and coral reefs.

The appearance of large quantities of sea sponges along the coast has drawn attention to the possible effects of changing marine conditions.

Fishermen have urged the authorities to examine the specimens and identify the factors responsible for their arrival on the shore.

Is it due to El Niño ?

Climate change and possible shifts in ocean conditions associated with the El Niño phenomenon have been suspected as potential reasons for the sponges washing ashore.

However, the cause has not been established, and further investigation is required to determine whether the phenomenon is linked to El Niño.

Fishermen have requested that Forest Department officials assess the situation and examine whether changes in sea temperature, currents or other environmental factors could be responsible.

Sponges are an animal species

A Forest Department official explained that sea sponges are invertebrate animals that generally inhabit areas around underwater rocks and coral reefs.

They feed by filtering tiny organisms and particles from seawater, playing an important role in maintaining marine ecosystems.

The official added that rough seas and strong currents have previously washed pandanus plants, algae and seagrasses ashore.

The recent appearance of sea sponges has raised questions about whether changing ocean conditions are contributing to the phenomenon.

Further assessment is needed to establish the cause.