TIL If you grind a marine sponge through a sieve into salt water, it’ll reorganize itself back into a sponge. It’s the only animal that we know of that can do that.    https://www.reddit.com/r/todayilearned/comments/krgf8z/til_if_you_grind_a_marine_sponge_through_a_sieve/


TIL opossums are immune to nearly every snake’s venom https://www.reddit.com/r/todayilearned/comments/61aaaw/til_opossums_are_immune_to_nearly_every_snakes/


TIL It’s estimated that up to 90% of the wildlife found on Madagascar is found nowhere else on Earth    https://www.reddit.com/r/todayilearned/comments/cr9a9m/til_its_estimated_that_up_to_90_of_the_wildlife/


Decommissioned NYC Subway cars are dumped into oceans to create artificial reefs for sea creatures.   https://www.reddit.com/r/todayilearned/comments/4yjw7s/til_that_decommissioned_new_york_city_subway_cars/


TIL hammerhead sharks have never killed a human. there have only been 17 unprovoked shark attacks by hammerheads since records begin in 1580, all non-fatal!    https://www.reddit.com/r/todayilearned/comments/8njytq/til_hammerhead_sharks_have_never_killed_a_human/


TIL that Icelandic horses are not allowed to leave the country. If they do, they are banned from returning.    https://www.reddit.com/r/todayilearned/comments/mnulky/til_that_icelandic_horses_are_not_allowed_to/


TIL Australia has more species of venomous snakes than non-venomous ones    https://www.reddit.com/r/todayilearned/comments/bkwsp4/til_australia_is_the_only_continent_with_more/


“TIL that poison dart frogs raised in captivity are completely nontoxic. This is because they do not manufacture their own toxins. Instead, they simply concentrate toxins found in the insects they eat. When fed nontoxic insects, they cannot obtain the toxins, rendering them completely harmless.



TIL Pill Bugs are not insects but land crustaceans related to lobsters and shrimp.    https://www.reddit.com/r/todayilearned/comments/cafbl7/til_pill_bugs_are_not_insects_but_land/


TIL that despite having a wingspan of up to 7.5 feet and a height of up to 3.5 feet, a typical male bald eagle weighs only 9 pounds.    https://www.reddit.com/r/todayilearned/comments/49g0qz/til_that_despite_having_a_wingspan_of_up_to_75/