Portal:Marine life/Did you know

Light microscopy image of the undescribed species of Spinoloricus that is living in anoxic environment (Stained with Rose Bengal). Scale bar is 50 μm.

• The first animals that spent their entire lives without any oxygen (anoxic waters) were discovered in depths of Mediterranean Sea. They belong to three new species from phylum Loricifera (one of new species pictured).

Titan triggerfish

• Triggerfishes are the brightly coloured fishes of the family Balistidae. (pictured)

• Marked by lines and spots, they inhabit warm coastal waters of the Atlantic, Mediterranean and the Indo-Pacific.

• Marbled hatchetfish are the only known fish that can actually fly by jumping into the air and moving their fins.

• The sea otter often keeps a stone tool in its armpit pouch.

• Some cichlid fish, crocodiles and frogs keep their eggs or young in their mouths or stomachs.

• The Horseshoe crab has blue, copper based blood.