Aquatic Animals

This article is about animals that spend almost all their lives underwater and have adapted accordingly. Besides fish, several species of reptiles and mammals have developed a means to breathe underwater, be it via gills or lungs.

While sea turtles and other aquatic reptiles spend most of their lives underwater, they will go on land to give birth. After laying the eggs, the mother leaves them behind. Once they hatch, the newborns return to the sea quickly and are highly vulnerable to predation during this period.

Animals like river otters or iguanas are only partially aquatic since they also spend a lot of time on land. These creatures are semi-aquatic.

Aquatic Animals

List of Aquatic Animals

Mammals

  • Amazon River Dolphin
  • Amazonian Manatee
  • Beluga Whale
  • Blainville’s Beaked Whale
  • Blue Whale
  • Common Bottlenose Dolphin
  • Dugong
  • Dwarf Sperm Whale
  • Finback Whale
  • Gray Whale
  • Harbor Porpoise
  • Humpback Whale
  • Indo-Pacific Bottlenose Dolphin
  • Narwhal
  • Orca
  • Short-finned Pilot Whale
  • Southern Right Whale
  • Sperm Whale
  • Vaquita
  • West African Manatee
  • West Indian Manatee

Reptiles

  • Australian Flatback Sea Turtle
  • Green Sea Turtle
  • Hawksbill Sea Turtle
  • Horned Sea Snake
  • Kemp’s Ridley Sea Turtle
  • Leatherback Sea Turtle
  • Loggerhead Sea Turtle
  • Olive Ridley Sea Turtle
  • Shaw’s Sea Snake

Invertebrates

  • Asian Clam
  • Asian Shore Crab
  • Atlantic Bay Nettle
  • Atlantic Horseshoe Crab
  • Blue Blubber Jelly
  • Channeled Apple Snail
  • Chinese Mitten Crab
  • Clubbed Tunicate
  • Colonial Sea Squirt
  • European Green Crab
  • Golden Mussel
  • Killer Shrimp
  • New Zealand Mud Snail
  • Quagga Mussel
  • Rusty Crayfish
  • Spiny Water Flea
  • Veined Rapa Whelk
  • White Spotted Jellyfish
  • Zebra Mussel

Fish

  • Banggai Cardinalfish
  • Barramundi
  • Bighead Carp
  • Black Grouper
  • Blacktip Reef Shark
  • Bowfin
  • Brown Trout
  • Dwarf Gourami
  • European Eel
  • French Grunt
  • Giant Grouper
  • Gold-band Fusilier
  • Horn Shark
  • Leafy Seadragon
  • Longfin Sculpin
  • Mandarin Dragonet
  • Orange Chromide
  • Oyster Toadfish
  • Pacific Hagfish
  • Queensland Lungfish
  • Red Lionfish
  • Sailfish
  • Walking Catfish
  • West Indian Ocean Coelacanth
  • Whale Shark

FAQs

What is the fastest aquatic animal in the world?

The sailfish is the fastest creature in the water, swimming at speeds of 68 mph.

Which aquatic animals are endangered?

Vaquitas, whale sharks, several species of turtles and whales, etc.

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