Pweza na mioyo yake mitatu

Pweza ni mnyama laini anayeishi baharini. Ana mikono minane na hana mifupa. Lakini jambo la kushangaza zaidi liko ndani ya mwili wake. Pweza ana mioyo mitatu, siyo mmoja.

The octopus is a soft animal that lives in the sea. It has eight arms and no bones. But the most surprising thing is inside its body. The octopus has three hearts, not one.

Mioyo miwili hupeleka damu kwenye matamvua. Huko damu hupokea oksijeni kutoka majini. Moyo wa tatu kisha hupeleka damu hiyo kwenye sehemu nyingine ya mwili, hivyo pweza anapata nguvu ya kusogea.

Two of the hearts push blood to the gills. There the blood takes in oxygen from the water. The third heart then sends this blood to the rest of the body, so the octopus has energy to move.

Damu ya pweza ni ya buluu, siyo nyekundu. Ni buluu kwa sababu ina shaba ndani yake. Damu hii maalum humsaidia pweza kuishi kwenye maji baridi, ya kina kirefu. Pweza anapoogelea, moyo wake mkuu husimama, hivyo anapenda zaidi kutembea sakafuni mwa bahari.

The blood of an octopus is blue, not red. It is blue because it has copper inside. This special blood helps the octopus live in cold, deep water. When the octopus swims, its main heart stops, so it likes to walk on the sea floor instead.