One of my favorite fish in the whole ocean is the Mandarin Goby. Its lifestyle and behavior are much like any other goby, but its colors are absolutely stunning.
These vibrant and flashy fish can be found as the centerpiece of many saltwater aquariums. They are heavily sought after because of their beautiful display.
When you think of creatures in the ocean, Fish are probably the first thing that comes to mind. Fish are some of the most populous and successful organisms in the ocean. They are fast, big, and perfectly suited for life in the sea. They are members of the phylum Chordata, meaning they have a backbone and spinal cord. Fish eat anything from algae and plankton to huge marine mammals.
Fish are some of the most diverse and populous organisms on our planet. Fish range in size from tiny fish we can barely see with our naked eye, to the giant whale shark, which dwarfs humans. Fish are spread throughout the oceans of our world and can be found in all seas except the Dead Sea (which is too salty to support any life). Fish can live anywhere from the hot tropical seas to the frigid arctic ocean. Fish have been found from the shallows of tide pools to the deepest reaches of the ocean humans have been able to explore.
I will cover some of the most beautiful, exotic, and bizarre species of fish over the course of this blog. Keep checking for more updates.
Nudibranchs, commonly referred to as sea slugs, are some of the most beautiful creatures in the ocean. They are shell-less mollusks related to octopus and clams.
They can be found in oceans throughout the globe, most commonly in shallow tropical waters.
Sea slugs eat a variety of foods, and are usually carnivores. Many species feed on sponges. Some are cannibals.
Sea slugs are often very brightly colored to warn predators that they pack deadly poisons. This kind of coloration advertises that they are bad to eat and keeps predators from trying to make snacks out of them. 
Sea slugs are some of the few animals that carry both male and female reproductive organs. They can effectively breed with any other member of their species.
Coral reefs are home to millions of fish and some of the most abundant and beautiful life on our planet. Coral reefs also provide a barrier to protect land from erosion and they can even form entire islands. Much of the sand found on many tropical beaches is actually coral, ground up and refined.
Coral may look like brightly colored rocks but they are actually living creatures that secrete a hard exoskeleton where they live. Colonies of thousands of tiny creatures cling together to build a coral head. These coral heads build on each other to make an entire coral reef where a myriad of life can thrive.
Coral are actually related to jellyfish and sea anemones. They are very delicate and can only live in certain conditions. They need clear, shallow water to allow plenty of sunlight to reach them. They also need very warm temperatures to thrive. This is why most coral reefs are only found in the tropics. The reason they need so much sunlight is because they actually have algae living in their cells. The coral provides the algae with shelter and safety, and the algae provides coral with energy. Coral also feeds on floating animal materials that it snags in its outstretched tentacles.
