The word is out and spreading fast. Costa Rica has amazing ocean life! Between visits to world famous resorts, national parks and pristine coastlines, more and more visitors are taking the plunge to discover the amazing diversity of life that exists just beyond what our eyes can see. Eyes without a mask and snorkel, that is.
After years of snorkeling and diving in the northwestern Pacific coast of Costa Rica, I still get excited before each trip, underwater. Always going through my head is the same thought: 'What will I see today?' Do I get bored diving in the same places over and over again? The simple answer is, no. More often than not, I end up seeing something that I have never noticed before, something that I cannot believe I am seeing or something I am so excited to show someone else. There is one thing that the reefs off the coast of Guanacaste are not lacking, and that is life.
Just below the surface along the coast and around the numerous little islands just a short distance from the shore, there exist amazing reef ecosystems centered on and around volcanic rock formations. These highly diverse ecosystems are honer to an extraordinary amount of biodiversity. Here, you can find many species of fish often in very large schools. There are at least five species of ray including the huge, majestic manta ray, moray eels of every size and color, sharks, crabs, starfish, sea horses, octopus, turtles, colorful corals and sponges, and plants. The list goes on and on.
Many people who come to snorkel or dive here are easily captivated by these unique communities and they often return year after year to see more. One of the reasons this area has so much ¡¡fe is due to the plankton rich waters that circulate through the region. Plankton are very small, often microscopic, plants, animals and bacteria that float with the currents and which create the basis of the food chain. Having a lot of these little guys at the bottom of the food chain creates an opportunity for many other species to thrive.
All the different plants, animals and corals that exist in these communities depend on each other to keep the entire ecosystem in balance. Removal of one species can have long lasting effects on the ecosystem as a whole. Coastal reefs across the world are facing many new stresses. Global warming is affecting ocean currents, temperatures and sea levels. Poorly managed coastal development is increasing the amount of runoff, including untreated sewage, which enters the ocean and increases the growth of harmful algae. Trash, pesticides and herbicides enter the ocean daily and are often carried there by rivers from hundreds of miles inland.
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