What is special about suckerfish is that they use vessels to get around the ocean. For this, they may use sharks or ships. The dorsal fin of the fish is like an oval sucking disc. It can move along with anything it attaches itself to, whether animate or inanimate. Whatever the creature to which it is attached does or no matter how fast it swims, the suckerfish does not become detached from it. In the picture above, suckerfish that are attached to the underside of a shark are seen. Allah knows where every creature is and what it does. In a verse, Allah states:
What is in the heavens and in the earth belongs to Allah. Allah encompasses all things. (Surat an-Nisa: 126)