Octopuses have incredibly strong muscles in their arms and tentacles, which allow them to move quickly and change shape. They use their muscles to escape predators, catch prey, and lift heavy objects. Squids have powerful muscles in their arms and tentacles, which allow them to swim quickly and change shape. They use their muscles to escape predators and catch prey. They also have a unique "funnel muscle," which allows them to jet propel themselves through the water at high speeds.
Sharks are also known for their strong muscles. They have powerful muscles in their jaws, which allow them to bite with immense force and tear through tough prey. Their body muscles also allow them to swim at high speeds, making them effective hunters. Eels have powerful muscles in their fins and tail, allowing them to swim quickly and change direction easily. Sea turtles have strong muscles in their flippers, which allow them to swim long distances, and they can weigh over 400 kg.
Jellyfish have a unique type of muscle called "smooth muscle," which is responsible for the movement of their bell and tentacles. They use their muscles to contract their bell, which propels them through the water and controls the movement of their tentacles. Starfish, also known as sea stars, have a unique type of muscle called "tube feet," which are used to move and capture food. Although they use these muscles to move and crawl across the ocean floor, they also have muscles in the body wall and arms to control their arms' movement and positioning.
Seashells do not have muscles, but the mollusks that create them do. These muscles are used to move, open, and close the shells, allowing the mollusks to protect themselves and forage for food.
In conclusion, the sea is home to a wide variety of creatures, each with its unique setting.