They get there energy from eating their prey just like us humna we get it from eating and drinking and sleeping.
An octopus uses energy to move and catch prey.
Yes, an octopus can regrow an arm that gets torn off.
It uses its legs and starts scratching it until the blue ringed octopus has no energy left. If the blue ringed octopus tries to poison it, it does nothing because the mantis shrimp has hard armor protecting it.
Well it depends on the size of the octopus. Mostly people do die because the octopus gets lodged in the throat of the in-taker because the octopus sucks on the inside of the throat with its suckers.
Phytoplankton gets eaten by zooplankton, which gets eaten by a small fish, which gets eaten by a shark, which dies than is eaten by a crab, which is eaten by a blue ringed octopus. The blue-ringed octopus eats crab, hermit crab, shrimp, and various small fish.
Of course - all living beings use energy.
By cruising around in the water looking for more food (energy).
by propulsion. the propel themselves through the water if you ride the Kraken you'd know.
The mantis shrimp can scratch up the octopus and make it lose energy. So, now the matis shrimp can defeat it.
The body gets its energy when you respire. Respiration is an energy release inside a cell
Living they can move, think, eat, use energy, and reproduce
Life on Earth gets most of its energy directly or indirectly from the Sun.Life on Earth gets most of its energy directly or indirectly from the Sun.Life on Earth gets most of its energy directly or indirectly from the Sun.Life on Earth gets most of its energy directly or indirectly from the Sun.