Marine Biology





Marine Biology is the most fantastic branch of Science. Exploration of nature is the highest and noblest pasttime of all. There are so many incredible and amazing animals and plants in the sea. Many of them are strange, spectacular, beautiful, exotic, or tremendously scary and fearsome but always fascinating. Learning about them is the source of enormous satisfaction and wonder. Lots of sea life forms have incredible architecture, amazing design and clever survival mechanisms.

Sea urchins for example; They have cement plates of intricate complexity, rings of fluid pipes, hydrostatically pressurised, hydraulic tubes which power up to 20, 000 tiny tube feet, each with its own separate pump. These enable them to move, excrete and even prise open bivalve molluscs. They also taste the sea floor.

Sea Urchins have a Ball and Socket joint in each spine, each mechanically perfect. These ball and sockets joints are an architectural masterpiece in their complexity and precision. Sea Urchins can have thousands of them! What I find incredible is that a biological animal made of flesh can make machine parts such as levers, ball and socket joints, hydraulics, chimney and more!

All Life came from the sea.

The sea is filled with incredible life forms, each with survival skills and adaptations. Even the simplest life form has an amazing history and a story to tell. The longest battle in history is the battle for living space between marine species on the Great Barrier reef. Corals, sponges, clams, Tunicates algae and many more all fight for survival and living space against incredible odds and survive. When I visit a coral reef, I see a 'battlefield' where corals, sponges and many other sedentary lifeforms battle for living space. This battle for survival has been going on for six hundred million years. ( Ever since Earth exited from the time 600 to 700 million years ago when the entire planet was covered in ice. The global freezeovers lasted millions of years even at the equator.)

One of the greatest warriors of all is the Painted Cray

This Painted Cray is a true hero of the sea. It has done battle thousands of times and survived to a grand old age. Who knows how old this one is? 40 ? 50? years? The more you learn about them, the more interesting they become. Lobsters have a fantastic sense of smell, rivalling a shark. They can sense prey for miles. Females produce love potions called pheromones that drift down on the current to let the males know that the time for mating is here. She can only mate when she moults so there is a very small window of opportunity to ensure that the species does not die out.

Crays have body segments with appendages. In my Marine Biology course, I do the anatomy of lobsters in detail, explaining how each life process is caried out and what each appendage does.

Next, we do a dissection of a prawn to check out 20 or so of its main anatomical components. You walk away with heaps of new knowledge and a mastery of the topic..

Good stuff!

Learning Marine Biology helps you to dive with your brain.

For more information about my Marine Biology course email me at or

This course consists of 5 lectures, four day scuba dives and one night dive.

Padi Research Diver C card awarded.



  Painted Lobster