A lot monster can be a sea-dwelling, legendary, or mythical creature considered of immense size with first reported sightings for most centuries. These monsters include dragons, sea-serpents, and multi-armed beasts. The drawings which you see of which usually suggest to them attacking ships. They were a sailor's peril, but they are they still a threat today?
We may reminisce at drawings of those odd looking fish our ancestors have drawn and say, what were they thinking? However, why is you think that our descendants won't appreciate everyday us and say the same? Regardless of the rapid progression of technology with underwater radars and GPS systems, the word "Legends never die" can still maintain its validity. There are many then the couple of legendary sea monsters possibly still dwelling from the waters of the world today. I could even recall watching a television episode on the History Channel a month back about two scientists trying to find a legendary octopus considered to be of immense size along with existence for centuries. They haven't found the creature, nevertheless they did get a quantity of interesting pictures that may only make the creature's existence more probable.
Sure, we could carry on about what may be on the market but have we ever stopped and asked ourselves, the fact that was available? Are we ever captured or included the remains of a single of such creatures? The answer then is yes.