describe the encounter of the oldman with the sharks

The shark detected the blood from the marlin and followed the trail to the skiff. After struggling with the approaching shark, the old man maims him. However, the shark has already torn apart and devoured 40 pounds of Santiago's marlin. In the process, the shark also takes the old man's harpoon and rope. It is difficult for Santiago to look at his mutilated marlin. He sympathizes with his adversary and feels like the shark attacked him as well. Though he is proud he hooked the big marlin, he begins to wish it were all a dream.

a mako shark arrives, having smelled the marlin’s blood. Except for its jaws full of talonlike teeth, the shark is a beautiful fish. When the shark hits the marlin, the old man sinks his harpoon into the shark’s head. The shark lashes on the water and, eventually, sinks, taking the harpoon and the old man’s rope with it. The mako has taken nearly forty pounds of meat, so fresh blood from the marlin spills into the water, inevitably drawing more sharks to attack. Santiago realizes that his struggle with the marlin was for nothing; all will soon be lost. But, he muses, “a man can be destroyed but not defeated.”

He was poor

He was alone

i need to know what are some adjetives for the mako and galano shark and similes and how the swim suggest what about the sharks?And how are there heads are descried and why♥♥♥