The mark consists of a round logo. The outer circle of the logo is highlighted in dark blue. There is a dark blue plane and ring around the dark blue outer circle indicating that the plane is circling the logo itself. Below the dark blue outer circle are the following words written in dark blue "ASSISTING DIVERS UNDER PRESSURE". The middle circle of the logo is highlighted in gold, and contains the following words written in dark blue at the top of the middle circle "SCUBA DIVERS TRAVEL NETWORK". This gold middle circle also contains the following words written in dark blue at the bottom of the middle circle "SDTN". The inner circle of the logo has a dark blue outline around the circle with white in the interior of this inner circle. The interior of the inner circle is separated into four quadrants and each quadrant is outlined using lines that are outlined in dark blue with white interior and these are used to distinguish the four quadrants. At the center of the four quadrants is red dive flag with a white stripe that appears to be blowing in the wind. The left quadrant contains a dark blue scuba diver with a yellow stripe on the divers outer left leg and this yellow stripe continues over the divers ankle to the bottom of the divers left fin. The diver has another yellow stripe going down his inner side of his right leg to the divers ankle. The divers right fin also has yellow stripe in the center of the fin. The diver has a yellow face mask covering his eyes and mouth. The diver also has yellow straps across the divers chest rising over his shoulder to hold the yellow scuba tank that is attached to the divers back. The yellow scuba tank has red stripes which help attach the tank to the diver. The diver is blowing out a series of dark blue bubbles above his head. In front of the divers hands and below his legs are three white angelfish with red stripes across the body. In front of the fish below the left knee is a red moray eel with white spots. The moray eel is acting curious as it attempts to swim toward the diver from the green sandy ocean bottom. Behind the moray eel at the base of the green sandy ocean bottom is dark blue coral. The background color for this quadrant is light blue to show that all activity is taking place in the ocean. The top quadrant contains a green flat map of the world with a background color of light blue for this quadrant. The right quadrant contains a dark blue eagle ray with white spots on the top of his body and the belly of the eagle ray is also white. Below the eagle ray is a green sandy ocean bottom. Rising from the green sandy bottom are yellow, red, and blue corals. The yellow coral is presented under the eagle rays tail while the red and blue corals are staggered in front of the yellow coral. The background color of the coral is light blue to show that the activity is taking place in the blue ocean. The bottom quadrant contains a green sandy bottom with a dark blue boat with a white stripe along the top and front of the boat. The boat also has two white windows and a white porthole. The dark blue boat also has a dark blue sail. Behind the boat is a yellow captains wheel. To the right of the boat in front of the captains wheel are a series of red and blue corals. To the left of the boat are a series of dark blue and red corals. In the front of the boat to the left is a red anchor with a yellow rope serving as the anchor line. The anchor line stretches to the back of the boat. The background color for this quadrant is light blue indicating that the scene takes place in the ocean.