Some turtles are carnivores, while others follow a strictly vegetarian diet. Most turtles, however, are omnivores, eating both animals and plants. ... Sea turtles, depending on the species, may eat seagrasses, algae, sponges, sea squirts, squid, shrimp, crabs, jellyfish, cuttlefish or sea cucumbers.

Is it OK for turtles to eat algae?

Keep in mind there may always be some algae in the tank and perhaps even on your turtle's shell―trying to totally remove algae is futile and unnecessary. ... However, your turtle might eat them so you'll have to replace them continuously.

Is algae on turtles bad?

Well nothing really, generally speaking it is not harmful to your turtle. Algae growing on a turtle shell is normal. ... Sometimes algae will grow under partially shed scutes, which could cause water to accumulate and a local shell problem like shell rot may develop.