Follow up - Marine Life in Captivity



With jellyfishes complicated life cycle but beautiful interior, they have become a popular attraction at aquariums. Due to their complex lifestyle, many jellyfish fail to be protected. Jellyfish are very mysterious creatures.

Due to the ocean’s climate change, jellyfish blooms are increasing. Blooms float to the bottom of the ocean and starving fish rely on these blooms but where the blooms land, the oxygen level is low, the starving fish choke.

Even so, Jellyfish do play an important role in food chain. They feed on zooplankton and many fish rely on jellyfish as a food source.

Breeding clownfish in tanks sounds easy enough but as the increase in popularity continues, wild anemone is no longer being cleaned and eaten. The more clownfish we take out of the ocean, the anemone will sting the coral and kill the coral, due to its unhappy environment.

Octopuses naturally live isolated, their life span is no longer than five years, it is common for male octopuses die months after mating with a female. And the female dies soon after releasing her eggs.

It is currently unclear whether the fascination with octopuses are hurting them.

It is feared that the popularity of octopus may endanger them. Newly imported octopuses may live up to one or two years. Some pass within weeks of new confinement. However, common species are known to live well in captivity.

Coral reefs transferring location to tanks have a potential to save corals in the wild. However, coral reefs protect coastlines from storms and erosion, they are a source for food and new medicines. Nearly everyone relies on reefs to stay alive to protect their income and homes.

There is a large, uncontrolled threat damaging reefs. Scientists and conservations have thought about growing and maintaining corals to transfer them into the ocean once the threat is controlled.

Sea stars are crucial participants of the marine environment, they are considered a ‘keystone’ species. This means that they have no other natural predators and if they are removed from their natural habitat their prey will increase in population and could wipe out other species.

Interactive zoos have a responsibility to make sure starfish or other sea creatures remain underwater. Starfish breathe through tiny pimples found on all over their body, which is equipped with a very thin layer of tissue, if they are taken out of the water or touched by a human, they could die instantly.

Whales and dolphins naturally live-in groups, often in a tight family bond, which lasts for years, in one species, even a lifetime. Whales and dolphins travel long distances every day, to search for food and to socialise. They normally spend 10-20 percent of their time near the surface.

Whales and dolphins are always aware and always moving. Being in a tiny arena is a tragedy to their needed lifestyle. Tanks allow only a few strokes before they hit a wall and since many tanks are shallow, they spend more than half their time at the tanks surface.

These unnatural situations can cause skin problems. Killer whales in captivity can develop dorsal fin collapse, this is the lack of water support, gravity pulled their fins as the whales develop.