Pink sea urchins house five teeth, each supported by a separate jaw in a circular arrangement at the center of their spiked spherical bodies.
But researchers at Northwestern have discovered that the teeth of pink sea urchins are specially equipped to self-sharpen themselves.
The enamel break bits off regularly to maintain sharpness, the same way a knife sharpens upon a blade.
“The material on the outer layer of the tooth exhibits a complex behavior of plasticity and damage that regulates ‘controlled’ chipping of the tooth to maintain its sharpness,” said Northwestern University Professor Horacio Espinosa.
The teeth continue to grow throughout life, helping the sea urchins ward off predators.
They are renowned for their extraordinary abilities, diving to depths of over 70 m with nothing more than a set of weights and a pair of wooden goggles (Schagatay, 2014) and spending 60% of their daily working time underwater (Schagatay et al., 2011).
They’ve evolved to harbor extreme breath-holding capabilities with up to 13 minutes underwater. Even without weights, the Bajau can stay negatively buoyant enough to walk across the sea bottom as one does on terra firma.
For thousands of years, the Bajau people have developed expanded spleens due to their dependency on diving underwater for food.
No one knows what originally compelled the Bajau to dive other than their need to survive and feed entire families.
Brazilian surfer Rodrigo Koxa surfed a record-setting 80-foot wave from trough to crest in November 2017 in Praia do Norte, off the coast of Nazaré, Portugal. The 38-year-old Koxa is the official world record-holder for riding the biggest wave ever.
Nazaré is renown for hosting surfing competitions every winter where the waves can get up to 98 feet.
Just look at the lighthouse and onlookers in perspective to the surfer surrounded by the mountainous wave, or shall we say avalanche.
Here’s something you can look at for hours: looping waves in progress.
Created using visual effect software Houdini by Polish motion designer who goes by the name 00.032, according to her dribble page, the piece takes after Matthieu Lehanneur’s original physical work of the same vein.
The French designer Lehanneur constructed a furniture collection called Ocean Memories that depicts three-dimensional ocean currents frozen into stone and bronze sculptures.
Lehanneur and 00.032 demonstrate both static and motion-centric representations of the Earth’s ocean.
Waves, a symbol of natural energy, have been a fascination with artists such as Hokusai for centuries.
A professor develops an extraordinary relationship with an octopus when he invites it to live in his home. The octopus, called Heidi, unravels puzzles, recognises individual humans and even watches TV with the family.
The episode also shows remarkable behaviour from around the world – from the day octopus, which can change colour and texture in a split second, to the coconut octopus, which carries around its own coconut shell to hide in. But most fascinating of all is seeing how Professor David Scheel and his daughter Laurel bond with an animal that has nine brains, three hearts and blue blood running through its veins.
The Muraka hotel in the Maldives is the world’s first underwater hotel in the world.
With two-story rooms submerged 16 feet below sea-level in the Indian ocean, the residency also boasts an incredible price point: $50,000 per night!
According to Archpaper, the villas were constructed with the latest technology:
The construction of The Muraka was both innovative and environmentally-conscious. Each piece of the modular structure was built in Singapore and then carefully shipped to the Maldives, before being plunged underwater and nailed into place using thick, concrete pylons. The sturdy pylons ensure that the villa does not shift or downright float away in the midst of high tides or rough waves.
Personally, I think most of us are better off going to the aquarium for the day rather than sleeping with the fishes. You can see more images of the hotel right here.