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 Dolphins Eat. â¾ Large dolphin species like killer whales feed on marine mammals like sea lions, sea turtles, and seals. â¾ Black dolphins, also known as Chilean dolphins are relatively smaller in size, and their diet comprises small species of fish, cephalopods, and crustaceans. â¾ Bottlenose dolphins eat small fish and sometimes feed on squid, crabs, shrimp, and other small sea creatures.