According to reports from The Guardian, millions of tiny, blue creatures known as “by-the-wind sailors,” or Velella velella, are washing up on beaches from Oregon to California.
The flood of Velella colonies, which are hydrozoans, shocked and thrilled beachgoers, who have been capturing and sharing the incident on social media.
Despite their tiny size, these creatures are colonies with a sail-like fin that catches the wind, which allows them to travel the vast expanses of the Pacific Ocean.
While their emergence is a regular occurrence occasionally, the large number seen this spring sets it apart.
Velella spend most of their lives wandering in the ocean currents, using their tentacles to gather food.
They are not harmful to humans, but their sting can cause discomfort for zooplankton and fish larvae.
Their bright blue colour serves several functions, including possibly helping them disguise themselves from predatory organisms such as ocean sunfish and providing UV protection.
Researchers are constantly discovering the mysteries of these organisms, such as their life cycles and ecological impact.
They travel extensively over the Pacific gyre, with their numbers undergoing fluctuations determined by food availability.
These cycles result in large-scale beachings, such as the current one.
Despite their captivating appearance and widespread beachings, biologists rarely examine Velella due to the difficulties of studying organisms that dwell on the ocean’s surface.
However, new research has shed light on their relationship to ocean temperatures and the possible impact on marine ecosystems.
Climate change will likely bring more Velella colonies ashore, which could impact fish populations and other marine creatures.
The world’s waters are getting warmer, which means these sea creatures may enthral beachgoers, but their existence also reminds us of the complicated ecosystems in our seas.
Reference: NDTV, TOI
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