August 2023

Ålegræs har, som alle andre planter, brug for gødningsstoffer, især kvælstof (N). Hidtil har man antaget, at kvælstoffet optages af ålegræsset gennem blade og rødder fra det omgivende havvand og sediment, altså havbunden. Men i mange af de regioner, hvor ålegræs er mest udbredt, er der kun lidt kvælstof at finde. Og selvom der er rigeligt med kvælstof i havet i sin elementære form (N₂), d.v.s. som opløst gas, kan ålegræs ikke optage det. 

Florida's coral reefs, a vital marine ecosystem, have been under severe threat due to extreme ocean temperatures this summer. The coral reefs, besides being biodiversity hotspots, also serve as a protective barrier against coastal erosion and are a significant source of revenue through tourism.



Efforts to protect and restore these reefs have been ongoing for decades. Coral restoration, which involves planting coral fragments, has been a primary method employed by scientists.

Hogfish, Lachnolaimus maximus, possess an uncanny ability to alter their skin colour, transitioning from a mottled white to a deep coral orange within mere seconds. This remarkable transformation is a survival mechanism, allowing them to seamlessly blend with their environment, evading potential predators.

A team of British divers have identified the wreck of the SS Express, a ship that sank off Orkney in 1918, resulting in the loss of 13 lives. The vessel, which had been a vital lifeline connecting Orkney to mainland Scotland, met its unfortunate end following a collision with another ship, the HMS Grenville.

Moon jellyfish, ethereal and fair,

Drifting through the depths, a ballet in air.

Translucent bodies, a delicate grace,

Invisible currents guide your embrace.

Moonlit tendrils, trailing behind,

A dance of beauty, nature's design.

Gentle pulsations, rhythmic and slow,

In the tranquil sea's ebb and flow.

Mysteries hidden in your gelatinous form,

A testament to life's diverse norm.

Recent scientific research has begun to challenge the long-standing perception of sharks as solitary hunters. Rather, it reveals their complex social structure that is borne out of a high level of cognitive function.

In fact, these studies suggest that sharks possess a level of social intelligence, problem-solving skills and even emotional intelligence that far surpass previous beliefs, offering a fresh perspective on their behaviour and potential sentience.