- SEA LIFE Oberhausen, Seahorses
About the big-belly seahorse
About ten centimeters tall, permanently at the food and a big belly - these are our big-belly seahorses! They grow up to 35 centimeters tall. Quite naturally, as the name suggests: if you look closely, you can see that they snap at food particles in the water with their mouth without interruption - they are permanent eaters!