International Sea Slug Day | 2026

 

International Sea Slug Day | 2026

Every year on October 29th, International Sea Slug Day gives these brilliantly colorful, weird, and wonderful ocean creatures the spotlight they deserve. It is a day to celebrate underwater biodiversity and look a little closer at the tiny wonders keeping our marine ecosystems healthy.

The date was chosen to honor Dr. Terry Gosliner on his birthday. As a marine biologist at the California Academy of Sciences, Dr. Gosliner has dedicated his life to exploring the ocean floor, discovering more than 1,000 new species of sea slugs (nudibranchs) along the way!

Sea slugs are easily some of the ocean’s most captivating inhabitants. Found everywhere from sunlit tide pools to the pitch-black ocean depths, these soft-bodied mollusks come in mind-bending shapes and neon patterns. Some species can even absorb chloroplasts from the algae they eat to produce energy from sunlight, while others steal stinging cells from jellyfish and use them for self-defense.

Beyond their stunning looks, sea slugs are crucial to marine life. By feeding on sponges, anemones, and bryozoans, they keep reef ecosystems balanced. Because they react so quickly to shifts in water temperature and chemistry, scientists also look to them as natural indicators of ocean health, warming, and acidification.

Sadly, threats like rising sea temperatures, ocean pollution, and coral reef destruction are putting these delicate creatures at risk. Protecting sea slugs means safeguarding the vibrant benthic habitats they call home.

International Sea Slug Day reminds us that conservation is not just about the ocean’s giants—the smallest creatures often hold the secrets to a thriving marine ecosystem. By sharing our observations, keeping our coasts clean, and supporting marine protection, we can help keep our oceans full of life and color.

“Discover the ocean's hidden gems, protect the life below!”

#ASA

#USJ

#InternationalSeaSlugDay

#MarineBiodiversity

#SaveOurOceans

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The Vampire Squids are Deep Sea Survivors!

 

Did You Know? The Vampire Squid Is One of the Ocean’s Most Extraordinary Deep Sea Survivors!

Deep beneath the ocean's surface, where sunlight disappears and oxygen becomes dangerously scarce, lives one of the most mysterious creatures in the marine world: the vampire squid (Vampyroteuthis infernalis). Its scientific name means “vampire squid from hell,” reflecting its strange appearance, with large eyes, dark reddish-brown skin, and webbed arms resembling a flowing cloak. Despite its frightening name, this remarkable animal is not a bloodthirsty predator. Instead, it has evolved specialized adaptations that allow it to survive in some of the most challenging environments in the deep ocean.

One of the most interesting characteristics of the vampire squid is its ability to survive in oxygen minimum zones, where oxygen concentrations are too low for many other marine animals. Through its highly efficient oxygen transport system and exceptionally low metabolic rate, the vampire squid can obtain sufficient oxygen while minimizing energy consumption. These adaptations demonstrate how marine organisms evolve specialized strategies to survive under extreme environmental conditions.

Another extraordinary feature of the vampire squid is its unique feeding behaviour. Despite its name, the vampire squid is not a blood drinking predator. In fact, its feeding strategy is remarkably different from that of most squid.Unlike many other squid species that actively hunt fish and crustaceans, the vampire squid primarily feeds on marine snow, a mixture of organic particles, dead plankton, microscopic organisms, and other biological material that sinks from the upper ocean. Using two long, retractable sensory filaments, it collects these particles from the surrounding water. This feeding strategy highlights the importance of organic matter recycling in deep sea ecosystems and demonstrates how energy can support life even in regions far removed from sunlight.

The vampire squid also possesses remarkable defence mechanisms that help protect it from predators. When danger approaches, the vampire squid performs a dramatic transformation. It can draw its webbed arms over its body, creating a cloak like defensive posture that makes it appear larger and more difficult to attack. It can also produce flashes of light using specialized organs called photophores. Under certain circumstances, it may release a luminous cloud of mucus like material that can confuse potential predators, providing an opportunity to escape. These adaptations illustrate the extraordinary diversity of survival strategies found among marine organisms.

Beyond its unusual appearance and behaviour, the vampire squid is scientifically important because it provides insights into cephalopod evolution, deep sea ecology, and physiological adaptation to low oxygen environments. Its distinctive characteristics help researchers understand how marine animals respond to environmental challenges and how specialized organisms survive in habitats with limited food and oxygen availability. 

Ultimately, in the darkness of the deep sea, the vampire squid has mastered a different kind of power, the ability to survive where others cannot, showing us the ocean's most frightening looking creatures are not always its most dangerous. Sometimes, they are its most extraordinary survivors.

#Aquatics

#ASA

#USJ

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From hard work to a golden milestone ! 🥇👩🏻‍🎓

With exceptional academic excellence,  Sandali Himasha De Silva shines as a Gold Medal recipient in Aquatic Resources Management at the University of Sri Jayewardenepura. Her dedication and outstanding academic achievements stand as an inspiration to others.

May your journey ahead be filled with greater achievements and endless opportunities. Heartfelt congratulations on this remarkable accomplishment! 

#52NDCONVOCATION

#AQUATICS

#ASA

#USJ

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A beautiful milestone, a bright new beginning ! 🎓❤️

Every ending marks the beginning of a new journey. 

Congratulations to all our proud graduates on reaching this remarkable milestone at the 52nd Convocation of the University of Sri Jayewardenepura!

Your hard work, dedication, and unforgettable journey inspire us all. May the future bring you endless opportunities, great achievements, and happiness in everything you pursue.

Wishing you all the very best as you embark on the next chapter of your lives! 

#52NDCONVOCATION

#AQUATICS

#ASA

#USJ

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International Sawfish Day

“Protecting the ocean’s gentle giants today ensures the survival of an ancient living legacy for tomorrow.”

Today, October 17th, we observe International Sawfish Day. Distinctive for their long, tooth-lined rostra, sawfishes are among the ocean’s most iconic and fascinating creatures. Residing in shallow coastal waters, estuaries, and river systems, these unique ray species play a vital role as apex predators, keeping marine food webs balanced and ecosystems healthy.

Unfortunately, these prehistoric marvels face an uncertain future. Overfishing, habitat loss, and entanglement in discarded fishing gear have driven all five species of sawfish to the brink of extinction. Because their saw-like snouts easily snag in nets, human activities have dramatically reduced their populations worldwide, making all the five species of sawfish as one of the most critically endangered families of marine species on the planet.

However, informed conservation efforts and collective action can rewrite their story. Here is how we can act to protect sawfishes:

⭕️Prevent Bycatch: Encourage and adopt sustainable fishing practices that reduce net entanglements and allow safe release.

⭕️Protect Coastal Habitats: Safeguard crucial mangrove forests, estuaries, and river mouths where sawfishes live and breed.

⭕️Support Conservation Research: Back marine research initiatives and report sawfish sightings to help scientists monitor populations.

⭕️Spread Awareness: Educate communities about the ecological importance of sawfishes to reduce illegal trade and hunting.

Let us unite to safeguard these extraordinary ocean legends through responsible actions. Together, we can ensure that the ancient saws continue to glide through our seas for generations to come.

#ASA

#USJ

# Sawfishay

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