May your journey ahead be filled with greater achievements and endless opportunities. Heartfelt congratulations on this remarkable accomplishment!
#52NDCONVOCATION
#AQUATICS
#ASA
#USJ
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
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
Celebrating a remarkable milestone of academic excellence, dedication, and perseverance. May this achievement mark the beginning of a successful journey filled with new opportunities, meaningful contributions, and continued accomplishments.
Wishing all graduands a bright and prosperous future as they step into the next chapter of their lives.
#ASA
#USJ
#Aquatics
World Migratory Bird Day | 2026
World Migratory Bird Day is celebrated twice a year, on May 9 in the spring and October 10 in the fall in 2026. This year’s theme, “Every Bird Counts – Your Observations Matter,” reminds us that even small efforts, such as observing birds and recording information about them, can make a difference in protecting these amazing travellers.
Seven bird species have been selected as ambassadors for this year’s campaign: Cinnamon Teal, Merlin, Ruby-throated Hummingbird, Barn Swallow, American Oystercatcher, Spoon-billed Sandpiper, and Abdim’s Stork. These birds help highlight the importance of community participation in understanding and conserving migratory birds.
Bird migration is one of nature’s most fascinating journeys. More than 2,000 bird species travel thousands of kilometres in search of suitable places to feed, breed, and raise their young. Along the way, they play an important role in keeping ecosystems healthy by controlling insect populations, pollinating plants, and spreading seeds.
However, these incredible journeys are becoming more challenging due to climate change, habitat loss, plastic pollution, and other human activities. Protecting migratory birds is therefore not only a responsibility of conservationists but something we can all contribute to.
Interestingly, World Migratory Bird Day 2026 also marks the 60th anniversary of the International Waterbird Census, which helps monitor waterbird populations around the world and supports their conservation.
By observing birds, sharing our sightings, and protecting their habitats, we can help safeguard their future. After all, every bird matters, and every observation can contribute to a better understanding of their lives.
“Protect their wings, keep their journeys alive!”
#ASA
#USJ
#WorldMigratoryBirdDay2026
#NatureHasNoBorders
Did you know the Architects of the Abyss? The Shell-Collecting Titans of Lake Tanganyika
Deep beneath the crystal-clear waters of Lake Tanganyika in East Africa lives one of the most obsessive, calculating, and dramatic real estate moguls in the entire animal kingdom: the male Callipterus Cichlid (Lamprologus callipterus). While most fish are content finding a small crevice or building a simple sand pit to attract a mate, the male Callipterus constructs massive, sprawling underwater empires entirely out of empty snail shells.
The floor of Lake Tanganyika is home to thousands of empty freshwater snail shells (Neothauma tanganyicense). For a female Callipterus, these hard calcium fortresses are the ultimate safe haven to lay eggs and raise young away from predators. However, a female cannot move these shells herself—she is simply too small.
Enter the giant territorial male.
To build his harem, a dominant male swims across vast stretches of the lakebed, searching specifically for empty shells. When he finds one, he scoops it up in his jaws and swims it back to his territory, carefully arranging it into a centralized mound. A single nest can contain hundreds—sometimes over a thousand—snail shells, meticulously piled together into a aquatic mega-mansion that spans several meters across!
This unique lifestyle has driven one of the most extreme cases of size dynamic differences in the marine world:
The Giant Territorial Males grow up to 30 to 40 times heavier than the females! They must be huge and muscular just to carry heavy snail shells through the water column.
The Females remain tiny, tiny enough to slip deep inside the narrow spirals of a single snail shell where larger predators cannot reach them.
If the male were any smaller, he couldn't lift the shells. If the female were any larger, she wouldn't fit inside her home. Evolutionary pressure locked them into a literal game of giants and dwarfs.
Owning the biggest shell pile means attracting the largest harem of females—sometimes up to 30 females living in a single male's shell castle! But building an empire comes with immense drama:
Shell Theft: Neighboring males constantly attempt to raid each other's nests. If a dominant male looks away for even a second, a rival will swoop in, snatch a prime shell in its mouth, and attempt to carry it off to his own pile.
Pirate "Dwarf" Males: Not all males build shell fortresses. Evolution has birthed tiny "dwarf" males that are small enough to sneak directly inside the female's shell unnoticed right as she lays her eggs, fertilizing them right under the giant landlord's nose before making a quick escape!
The male Callipterus isn't just a fish—he is a heavy-lifting engineer, a defensive soldier, and a high-stakes real estate tycoon all in one.
Because empty shells are a finite resource in Lake Tanganyika, Callipterus cichlid nests act as essential micro-ecosystems, providing shelter and breeding grounds for dozens of other co-existing species across the lakebed!
#Aquatics
#ASA
#USJ
“Protect Our Cephalopods, Preserve Our Oceans.”
World Squid and Cuttlefish Day celebrates these fascinating marine creatures and highlights their important role in maintaining healthy marine ecosystems.
Squids and cuttlefish are remarkable cephalopods known for their intelligence, colour-changing abilities, camouflage, and unique adaptations. They play a vital role in marine food webs and contribute to ocean biodiversity and fisheries.
However, overfishing, marine pollution, habitat degradation, and climate change pose growing challenges to marine ecosystems and the species that depend on them.
Protect our oceans. Conserve marine biodiversity. Secure our future. đđĻ
#ASA
#USJ
#SquidAndCuttlefish
#MarineBiodiversity #Cephalopods #OceanLife #MarineConservation
WORLD OCTOPUS DAY 2026
“Protect the Ocean, Protect the Octopus.”
Celebrated on 8 October, World Octopus Day highlights these fascinating and intelligent creatures and their important role in maintaining healthy marine ecosystems.
Octopuses are remarkable marine animals known for their intelligence, adaptability, camouflage, and unique behaviors. As part of the ocean food web, they contribute to the balance and health of marine ecosystems.
However, our oceans face growing threats from pollution, overfishing, habitat destruction, and climate change, putting marine life at risk.
Protect our oceans. Protect marine life. Protect our future.
‘Mic On 2020’ - An Intra faculty, song and instrumental cover contest, was successfully organized by the Aquatic students’ Associatio...
