oceanic assassins

Perhaps you have seen the shark jaw, or the deep blue sea, ... if so, you will definitely think that shark is the most dangerous killer of the ocean.

Sharks are always considered one of the world's most dangerous marine creatures by their speed of hunting and sharp teeth.

The killer whale scientific name is Orcinus orca, belonging to the toothed whale sub-division. According to Wikipedia, this is the largest species of dolphin family and is the