Ranitidine is a competitive, reversible inhibitor of the action of histamine at the histamine H2-receptors, including receptors on the gastric cells. Ranitidine does not lower serum Ca++ in hypercalcemic states. Ranitidine is not an anticholinergic agent.
1 The Blue Marlins have a diet of: Octopi, squid and pelagic fish such as black fin tuna and frigate mackerel.  They do prefer to hunt alone and during the day, rather than in schools, so it is safe to say they are a rather antisocial species.
What do dolphins eat? Dolphins are carnivores; they eat other animals. Dolphins eat a variety of fish, squid, shrimps, jellyfish and octopuses. The types of fish and other creatures dolphins eat depends on the species of dolphin, where the dolphins live and the wildlife that shares their habitats. There are more than forty species of dolphin and they live in environments ranging from fresh water rivers, estuaries, coastal waters to deep sea open oceans.