Picture of the week: Bigeyes

Bigeyes (Priacanthus hamrur) from the Red Sea. Taken with Olympus Zuiko 8mm F1.8,  DS 161 strobes. 1/100, @11. ISO 250.

Highlighted: Olympus versus Panasonic test.

In this mini-test, I compared the  Olympus Zuiko 8mm fish-eye lens with the Panasonic 7-14  rectilinear lens using top-side environments. My question was if the  Pana lens is able to focus on objects at small distances, such as those used in CFWA shots in a wet environment.

Highlighted: The life of baby-sharks

A wonderful BBC earth article on the birth and hardships of young sharks. Baby and juvenile sharks lack parental care, and will not mix with adult sharks at the risk of being eaten by the bigger sharks, which may even include their own mothers.  Becoming a shark thus means  lots of dangers for the puppy sharks

Highlighted: how our brains developed from creatures of the sea.

A large part of the octopus brain lies in it's arms

Creatures that live in the sea, even the Medusozoa (jellyfish) have nervous systems.  Two-thirds of the nerve cells in the even more complex nervous system of  the octopus  (a mollusk) are located in the nerve cords of its arms which makes the eight tentacles function as an extended brain (see insert). Godfrey-Smith the author of the best-selling recent book Metazoa writes about how our nervous system developed from our early ancestors the metazoans (organisms with multiple cells), probably from the cells of corals, sponges, and anemones that live in the sea. Each of these organisms has evolved into a form that is perfectly adapted to its environment. He describes a one-armed shrimp as follows: “Eighteen limbs and protrusions … a body like a Swiss Army knife.” In spite of missing a claw and being surrounded by bigger, mightier animals such as mollusks and sharks — “in the land of the limbless, the one-armed shrimp is king’. The body of common fishes functions as ‘one great ear’,  catching the smallest sounds propagated in the water enabling some species even to distinguish between different melodies. Knowledge of how 'primitive' biological systems have evolved would, in his view,  contribute more to the understanding of the human brain than that of the modern digital computer. 

 

Highlighted: Cant you sleep? Try Oceanscapes

Sit back, relax, and witness the incredible life that exists at the surface of our blue planet. Fully immerse yourself in the ocean with this 10 hour loop. Ocean Surface: 10 Hours of relaxing Oceanscapes, set at scull screen.

  

Highlighted: E-book update

This ‘E-book’  contains an updated collection of around 80  blog articles from the last three years.  I here provide two separate content lists, a list in which the articles are ordered according to the five most often recurring themes, and a chronological list. A simple click on the title will hopefully guide you to the article of your choice. For download,  click  next to the  PDF icon below

E-booknew