Aleksandr Olins

5.B form

Riga Ostvald secondary school

Contect Sharks

Queen triggerfish

Great hammerfish

Dolphins

Blue whales

Pictures

Sharks There are more than 465 known species of

sharks living in our oceans today. Sharks are an

apex predator at or near the top of their marine

food chains, and they regulate the populations of

species below them.

Queen triggerfish

The deep-bodied queen triggerfish has suitably regal

colouring; it is a flamboyant, and variable.Triggerfish

are named after the spines situated on their backs.

The first large spine can be erected and then locked

into place by the second smaller spine which fits into

a groove in the first spine.

Great hammerhead

The massive and well-known great hammerhead has

the most distinctive hammer of its genus. It is

particularly wide and virtually straight along the front

edge, with just a small notch in the centre.

Dolphins Dolphins are cetaceanmammals closely related

to whales and porpoises. There are almost forty

species of dolphin in 17 genera. They vary in size

from 1.2 m and 40 kg (Maui's dolphin), up to 9.5 m ( and 10 tonnes.

Blue whales• The blue whale is the largest animal to have ever

lived!

• The heart of the blue whale is the size of a small car

and can weigh up to 900 kg!

• During the summer months, the blue whale can eat

more than 4 tonnes of krill every day.

• Individual blue whales can be identified by the

mottled pattern on their skin.

Pictures of sea world

Thank you for your attention!!!