Daniel was a figure known for his unwavering loyalty to God. He served in a foreign court but still adhered to his religious beliefs. This made him some enemies who plotted against him and got him thrown into the lions' den.
Song of the Ocean and The Tale of the Ocean were different translated names for the same book. They were all science fiction novels by the British author, Asimoff, about a fantasy world made up of different species of humans, in which there was a complex relationship between humans and marine creatures, extraterrestrial creatures, and other mysterious creatures. Although the two names are not directly related in the story itself, they are different translated names of the book.
Daniel was a man who was very faithful to his God. He was living in a foreign land under a different king. But he didn't abandon his religious practices even when it was against the king's orders.