Snorkeling and Scuba Diving in Corfu
Snorkeling is a very relaxing activity, and the ocean bottom can be rich in underwater life and rock formations. You should always find some time during your excursions to the beach to go snorkeling for a few hours, usually swimming close to the shore.
Needless to say that the places with a rocky bottom and a relative depth of six to ten feet offer the richest underwater landscape. Many times in a swim towards the rocky and remote areas around the sandy beaches reveals a variety of caves and caverns of varying sizes. Always careful to stay away from strong currents, and to stay close to the shore, especially if my distance from a busy beach increases.

Tips for an enjoyable snorkeling experience in Corfu
The best tip is to invest in a quality silicon mask which fits well around your face. The plastic masks typically sold in the beach stores usually fill with water very fast and make it impossible to see.
A snorkeling mask with a wide glass area is also best for snorkeling since it offers a wide angle of view. The snorkeling masks that have two lenses -one for each eye- are better suited for deep diving but restrict the field of view. A good mask should cost 20 - 35 € and you can find them in outdoor gear stores, or specialized scuba diving stores. A good shave is also prescribed for male divers since a beard cannot let the mask create a seal around the face, leading to a mask full of water and a frustrating snorkeling session.
If you have ever snorkeled you probably know that lens fogging can be a frequent problem. Surfacing and cleaning the mask every five minutes can be vexing and taxing. There are a variety of products in the market that promise to keep a snorkeling mask clean. Before entering the water rub some of your own saliva on the inside of the lens and rinse it with sea water. If you do this before the mask gets wet you should have a fog-free lens for at least half hour or more.
You will also find snorkels with filters which can cost more than €25 but I found a simple €2 breathing tube from a toy store to work just fine for me. A pair of quality fins can also enhance your the snorkeling experience by allowing effortless propulsion through the water, and by keeping their shape after many many dives. Expect to pay about 20-30 € for a good pair of fins, and you can purchase them at the multitude of scuba diving shops in Corfu.
An underwater camera can also be a useful accessory for snorkeling. It's recommended that if you go out with a professional then you ensure they have liability insurance. If you are a serious photographer you can buy a dedicated underwater still or video camera, but if you just want a few snap shots here and there you can purchase the disposable water proof cameras sold in photo supply stores and even supermarkets in Greece (they cost about 10 € and contain 27 exposures.) The water of the Ionian sea is usually very calm in the morning, and as a rule it becomes choppy in the afternoon (after 4:00 PM). The visibility in the water, the wave height and currents vary from place to place, and from time to time so use caution on every dive. If you are not experienced swimmer make sure that you snorkel with company and stay close to the shore. Many times the passage of a large ferry off shore can bring a few unforeseen waves crashing onto an otherwise calm beach, and they can catch a diver by surprise. Also, be on the lookout for speed boats. They are plenty of speed boats in Corfu, and they always seem to come dangerously close to the shore.