That's a baby ocean sun jellyfish it's a tipe sephalapod found in the Indian Ocean west Queensland its critically endangered and it is special animal because it is first started from adult and then baby and it is transparent in color.
19:17 Ichthyosaurus. False. It is not a dolphin (mammal) nor a shark (fish). It is in fact a reptile, like lizards, that has evolved to look similar to dolphins/sharks to live in the same ocean environments.
And also Dan Gulper Eel:Gulper eel is also known as the umbrellamouth gulper or pelican eel.its large mouth allows it to swallow fish much larger than itself it also has a special organ on the end of its tail, which lights up.scientists think this may help the eel to attract prey.