Koi

You are scared of improvement because you cannot change.

Parrot fish sleep in mucus at night to ward off what is basically the sea version of a mosquito.

"Beware, men in the mountains, for a good wolf comes to you in dragon skin."
          -E.E. Knight.

Cookie cutter sharks. They're small,  and don't kill their prey....at least not immediately.  If the name wasn't clear,  they take a couple bites out of the side of their victims,  and that's it. They're rather small,  and their main food source is seals.

"Perception is reality" -Lee Atwaters.

Sea bunnies you guys! Cute, invasive, and hungry fuckers, just like us! Lion fish are also very  invasive in the Atlantic coastal, and Caribbean Sea! As well as ivy!

So. Lemme say this. Orcas. Are dolphins. They are in the category of dolphin. Technically,  they are also a whale because dolphins are a subcategory that's toothed whale,  but they are a dolphin.  Also! Please don't go to sea world! They get their teeth drilled out for "safety"reasons! And if they ever went into the wild with this handicap again they would starve to death! Please and thank you.

HAPPY PI DAY PLEASE EAT A LOT OF PIE AND WATCH LIFE OF PI AND BE SUPER COOL OH WAIT THAT'S ALREADY DONE HAHAHAHAHAHAHA fuck my life

Dolphins have these nifty little things called melons. No,  not like the fruit XD. It's located in their head, and is used as underwater echolocation. It's like......ok,  so you know how you can cup your hands and shout and it will sound louder? The point is, the melon basically concentrates their clicks and other noises and "shoots" the sound into the water. If the sound "wave" (eeeeyyyyyy) reaches something,  a sound wave will bounce back to the dolphin, alerting it to general shape,  pretty accurate location and if it sends it multiple clicks,  where it's going.  The melon itself is pretty much very specialized fat, maybe fatty tissue. Eh. I'm not an expert. But look it up its really cool!

"A writer is a world trapped inside a person."
          ~Victor Hugo