What sea animal is extinct?

The only marine fish known to have gone extinct in the last 500 years: the New Zealand grayling (Prototroctes oxyrhynchus). This species spawned in streams but grew into maturity in the oceans off New Zealand. Overharvesting, invasive trout, and deforestation are thought to have led to its extinction.

How many sea animals are extinct?

15 ocean animals
Since the 1500s, 15 ocean animals have vanished from the world’s oceans. Many were never photographed. According to environmental news site Mongabay, the 15 extinct species include various marine birds and mammals, sea snails, and the Christmas sandpiper pictured above.

What is the biggest extinct sea animal?

giant ichthyosaur Shonisaurus sikanniensis
The giant ichthyosaur Shonisaurus sikanniensis measured around 21 meters or about 70 feet in length, making it the largest extinct ocean animal. It lived during the late Triassic or about 201 to 235 million years ago. Ichthyosaurs ate fish and squid primarily, but may have eaten larger vertebrates.

What are the extinct animals names?

Read on to discover a few of the animals we have lost to our unthinking exploitation.

  • Dodo – Raphus cucullatus. dodo.
  • Steller’s Sea Cow – Hydrodamalis gigas.
  • Passenger Pigeon – Ectopistes migratorius.
  • Eurasian Aurochs – Bos primigenius primigenius.
  • Great Auk – Pinguinus impennis.
  • Woolly Mammoth – Mammuthus primigenius.

Are there any extinct jellyfish?

A large jellyfish species with an incredibly powerful sting – and which was thought to have become extinct long ago – has been discovered off the coast of Queensland, Australia. The last sighting of the rare Crambione cookii was back in 1910.

Are sea turtles extinct?

Not extinctSea turtles / Extinction status

What sharks are extinct?

Read on for the top facts about the most interesting extinct sharks.

  • Megalodon. A megalodon.
  • Cladoselache. Cladoselache had a body evolved for speed!
  • Stethacanthus. Stethacanthus had a unique appearance!
  • Orthacanthus. Orthacanthus live in freshwater.
  • Xenacanthus.
  • Hybodus.
  • Ptychodus.
  • Cretoxyrhina.

Are sea cows extinct?

Not extinctSea cows / Extinction status

Are blue whale extinct?

Endangered (Population increasing)Blue whale / Conservation status